64375697 has 4 divisors (see below), whose sum is σ = 64548660. Its totient is φ = 64202736.

The previous prime is 64375693. The next prime is 64375711. The reversal of 64375697 is 79657346.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47761921 + 16613776 = 6911^2 + 4076^2 .

It is a cyclic number.

It is not a de Polignac number, because 64375697 - 2² = 64375693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64375691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85922 + ... + 86667.

It is an arithmetic number, because the mean of its divisors is an integer number (16137165).

Almost surely, 2^64375697 is an apocalyptic number.

It is an amenable number.

64375697 is a deficient number, since it is larger than the sum of its proper divisors (172963).

64375697 is a wasteful number, since it uses less digits than its factorization.

64375697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172962.

The product of its digits is 952560, while the sum is 47.

The square root of 64375697 is about 8023.4467032566. The cubic root of 64375697 is about 400.7811755023.

The spelling of 64375697 in words is "sixty-four million, three hundred seventy-five thousand, six hundred ninety-seven".