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670312707 = 31491519931
BaseRepresentation
bin100111111101000…
…010100100000011
31201201022102011120
4213331002210003
52333100001312
6150303043323
722416364311
oct4775024403
91651272146
10670312707
11314412949
121685a0543
13a8b4684c
146504b0b1
153dcab28c
hex27f42903

670312707 has 16 divisors (see below), whose sum is σ = 905798400. Its totient is φ = 440892000.

The previous prime is 670312693. The next prime is 670312717. The reversal of 670312707 is 707213076.

It is not a de Polignac number, because 670312707 - 27 = 670312579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (670312717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62532 + ... + 72462.

It is an arithmetic number, because the mean of its divisors is an integer number (56612400).

Almost surely, 2670312707 is an apocalyptic number.

670312707 is a deficient number, since it is larger than the sum of its proper divisors (235485693).

670312707 is a wasteful number, since it uses less digits than its factorization.

670312707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10234.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 670312707 is about 25890.3979691313. The cubic root of 670312707 is about 875.1701250703.

The spelling of 670312707 in words is "six hundred seventy million, three hundred twelve thousand, seven hundred seven".

Divisors: 1 3 149 151 447 453 9931 22499 29793 67497 1479719 1499581 4439157 4498743 223437569 670312707