64975605 has 16 divisors (see below), whose sum is σ = 104353920. Its totient is φ = 34522688.

The previous prime is 64975583. The next prime is 64975609. The reversal of 64975605 is 50657946.

It is a cyclic number.

It is not a de Polignac number, because 64975605 - 2⁹ = 64975093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64975609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4017 + ... + 12086.

It is an arithmetic number, because the mean of its divisors is an integer number (6522120).

Almost surely, 2^64975605 is an apocalyptic number.

It is an amenable number.

64975605 is a deficient number, since it is larger than the sum of its proper divisors (39378315).

64975605 is a wasteful number, since it uses less digits than its factorization.

64975605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16380.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 64975605 is about 8060.7446926447. The cubic root of 64975605 is about 402.0222692547.

The spelling of 64975605 in words is "sixty-four million, nine hundred seventy-five thousand, six hundred five".