64874961 has 24 divisors (see below), whose sum is σ = 95698304. Its totient is φ = 42340320.

The previous prime is 64874951. The next prime is 64874963. The reversal of 64874961 is 16947846.

It is not a de Polignac number, because 64874961 - 2⁹ = 64874449 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64874963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163215 + ... + 163611.

Almost surely, 2^64874961 is an apocalyptic number.

It is an amenable number.

64874961 is a deficient number, since it is larger than the sum of its proper divisors (30823343).

64874961 is a wasteful number, since it uses less digits than its factorization.

64874961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 738 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 64874961 is about 8054.4994257868. The cubic root of 64874961 is about 401.8145911165.

The spelling of 64874961 in words is "sixty-four million, eight hundred seventy-four thousand, nine hundred sixty-one".