64626697 has 6 divisors (see below), whose sum is σ = 65021978. Its totient is φ = 64233792.

The previous prime is 64626689. The next prime is 64626713. The reversal of 64626697 is 79662646.

It can be written as a sum of positive squares in only one way, i.e., 62031376 + 2595321 = 7876^2 + 1611^2 .

It is not a de Polignac number, because 64626697 - 2³ = 64626689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64626607) 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, 31033 + ... + 33049.

Almost surely, 2^64626697 is an apocalyptic number.

It is an amenable number.

64626697 is a deficient number, since it is larger than the sum of its proper divisors (395281).

64626697 is an equidigital number, since it uses as much as digits as its factorization.

64626697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375 (or 2196 counting only the distinct ones).

The product of its digits is 653184, while the sum is 46.

The square root of 64626697 is about 8039.0731430931. The cubic root of 64626697 is about 401.3013801824.

The spelling of 64626697 in words is "sixty-four million, six hundred twenty-six thousand, six hundred ninety-seven".