64526997 has 16 divisors (see below), whose sum is σ = 87127040. Its totient is φ = 42476400.

The previous prime is 64526993. The next prime is 64526999. The reversal of 64526997 is 79962546.

It is not a de Polignac number, because 64526997 - 2² = 64526993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64526993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112722 + ... + 113292.

It is an arithmetic number, because the mean of its divisors is an integer number (5445440).

Almost surely, 2^64526997 is an apocalyptic number.

It is an amenable number.

64526997 is a deficient number, since it is larger than the sum of its proper divisors (22600043).

64526997 is a wasteful number, since it uses less digits than its factorization.

64526997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984.

The product of its digits is 816480, while the sum is 48.

The square root of 64526997 is about 8032.8697860727. The cubic root of 64526997 is about 401.0949106090.

The spelling of 64526997 in words is "sixty-four million, five hundred twenty-six thousand, nine hundred ninety-seven".