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64970901 = 3220813469
BaseRepresentation
bin1111011111011…
…0000010010101
311112020212022200
43313312002111
5113113032101
610240315113
71416146352
oct367660225
9145225280
1064970901
1133746666
1219912a99
13105ca728
1488b3629
155a85986
hex3df6095

64970901 has 12 divisors (see below), whose sum is σ = 93919020. Its totient is φ = 43280640.

The previous prime is 64970879. The next prime is 64970903. The reversal of 64970901 is 10907946.

64970901 is a `hidden beast` number, since 649 + 7 + 0 + 9 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10595025 + 54375876 = 3255^2 + 7374^2 .

It is not a de Polignac number, because 64970901 - 25 = 64970869 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64970903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16995 + ... + 20463.

It is an arithmetic number, because the mean of its divisors is an integer number (7826585).

Almost surely, 264970901 is an apocalyptic number.

It is an amenable number.

64970901 is a deficient number, since it is larger than the sum of its proper divisors (28948119).

64970901 is a wasteful number, since it uses less digits than its factorization.

64970901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556 (or 5553 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 64970901 is about 8060.4529029081. The cubic root of 64970901 is about 402.0125673653.

The spelling of 64970901 in words is "sixty-four million, nine hundred seventy thousand, nine hundred one".

Divisors: 1 3 9 2081 3469 6243 10407 18729 31221 7218989 21656967 64970901