64942497 has 12 divisors (see below), whose sum is σ = 95206800. Its totient is φ = 42648408.

The previous prime is 64942487. The next prime is 64942517. The reversal of 64942497 is 79424946.

It is not a de Polignac number, because 64942497 - 2¹⁰ = 64941473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64942477) 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, 53247 + ... + 54452.

It is an arithmetic number, because the mean of its divisors is an integer number (7933900).

Almost surely, 2^64942497 is an apocalyptic number.

64942497 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

64942497 is a deficient number, since it is larger than the sum of its proper divisors (30264303).

64942497 is a wasteful number, since it uses less digits than its factorization.

64942497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107772 (or 107769 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 64942497 is about 8058.6907745613. The cubic root of 64942497 is about 401.9539748303.

The spelling of 64942497 in words is "sixty-four million, nine hundred forty-two thousand, four hundred ninety-seven".