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665685348 = 223411353019
BaseRepresentation
bin100111101011011…
…000110101100100
31201101121022121220
4213223120311210
52330403412343
6150015540340
722332142416
oct4753306544
91641538556
10665685348
11311842289
12166b2a6b0
13a7bb6573
14645a49b6
153d695183
hex27ad8d64

665685348 has 24 divisors (see below), whose sum is σ = 1591151520. Its totient is φ = 216482880.

The previous prime is 665685341. The next prime is 665685407. The reversal of 665685348 is 843586566.

It is a super-2 number, since 2×6656853482 = 886273965083762208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 665685348.

It is not an unprimeable number, because it can be changed into a prime (665685341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676018 + ... + 677001.

It is an arithmetic number, because the mean of its divisors is an integer number (66297980).

Almost surely, 2665685348 is an apocalyptic number.

It is an amenable number.

665685348 is an abundant number, since it is smaller than the sum of its proper divisors (925466172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665685348 is a wasteful number, since it uses less digits than its factorization.

665685348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353067 (or 1353065 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 51.

The square root of 665685348 is about 25800.8788222417. The cubic root of 665685348 is about 873.1516238442.

The spelling of 665685348 in words is "six hundred sixty-five million, six hundred eighty-five thousand, three hundred forty-eight".

Divisors: 1 2 3 4 6 12 41 82 123 164 246 492 1353019 2706038 4059057 5412076 8118114 16236228 55473779 110947558 166421337 221895116 332842674 665685348