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64975914 = 2323609773
BaseRepresentation
bin1111011111011…
…1010000101010
311112021010012100
43313313100222
5113113212124
610240354230
71416200103
oct367672052
9145233170
1064975914
113374a403
1219915976
13105ccab3
1488b53aa
155a871c9
hex3df742a

64975914 has 12 divisors (see below), whose sum is σ = 140781186. Its totient is φ = 21658632.

The previous prime is 64975901. The next prime is 64975931. The reversal of 64975914 is 41957946.

It can be written as a sum of positive squares in only one way, i.e., 45765225 + 19210689 = 6765^2 + 4383^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64975914.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1804869 + ... + 1804904.

Almost surely, 264975914 is an apocalyptic number.

64975914 is an abundant number, since it is smaller than the sum of its proper divisors (75805272).

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

64975914 is a wasteful number, since it uses less digits than its factorization.

64975914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609781 (or 3609778 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 64975914 is about 8060.7638595855. The cubic root of 64975914 is about 402.0229065435.

The spelling of 64975914 in words is "sixty-four million, nine hundred seventy-five thousand, nine hundred fourteen".

Divisors: 1 2 3 6 9 18 3609773 7219546 10829319 21658638 32487957 64975914