64874943 has 24 divisors (see below), whose sum is σ = 110791200. Its totient is φ = 35792064.

The previous prime is 64874939. The next prime is 64874951. The reversal of 64874943 is 34947846.

It is not a de Polignac number, because 64874943 - 2² = 64874939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64874923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15928 + ... + 19581.

It is an arithmetic number, because the mean of its divisors is an integer number (4616300).

Almost surely, 2^64874943 is an apocalyptic number.

64874943 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

64874943 is a deficient number, since it is larger than the sum of its proper divisors (45916257).

64874943 is a wasteful number, since it uses less digits than its factorization.

64874943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35551 (or 35548 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 64874943 is about 8054.4983083989. The cubic root of 64874943 is about 401.8145539544.

The spelling of 64874943 in words is "sixty-four million, eight hundred seventy-four thousand, nine hundred forty-three".