64874537 has 48 divisors (see below), whose sum is σ = 87137280. Its totient is φ = 47174400.

The previous prime is 64874527. The next prime is 64874539. The reversal of 64874537 is 73547846.

It is not a de Polignac number, because 64874537 - 2²⁰ = 63825961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64874539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1063487 + ... + 1063547.

It is an arithmetic number, because the mean of its divisors is an integer number (1815360).

Almost surely, 2^64874537 is an apocalyptic number.

It is an amenable number.

64874537 is a deficient number, since it is larger than the sum of its proper divisors (22262743).

64874537 is a wasteful number, since it uses less digits than its factorization.

64874537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 141 counting only the distinct ones).

The product of its digits is 564480, while the sum is 44.

The square root of 64874537 is about 8054.4731050516. The cubic root of 64874537 is about 401.8137157415.

The spelling of 64874537 in words is "sixty-four million, eight hundred seventy-four thousand, five hundred thirty-seven".