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661108 = 22723373
BaseRepresentation
bin10100001011001110100
31020120212111
42201121310
5132123413
622100404
75422300
oct2413164
91216774
10661108
11411778
1227a704
131a1bb6
14132d00
15d0d3d
hexa1674

661108 has 18 divisors (see below), whose sum is σ = 1346226. Its totient is φ = 283248.

The previous prime is 661103. The next prime is 661109. The reversal of 661108 is 801166.

It can be written as a sum of positive squares in only one way, i.e., 659344 + 1764 = 812^2 + 42^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1491 + ... + 1882.

2661108 is an apocalyptic number.

It is an amenable number.

661108 is an abundant number, since it is smaller than the sum of its proper divisors (685118).

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

661108 is a wasteful number, since it uses less digits than its factorization.

661108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391 (or 3382 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 661108 is about 813.0854813610. The cubic root of 661108 is about 87.1145713856.

The spelling of 661108 in words is "six hundred sixty-one thousand, one hundred eight".

Divisors: 1 2 4 7 14 28 49 98 196 3373 6746 13492 23611 47222 94444 165277 330554 661108