64874020 has 24 divisors (see below), whose sum is σ = 136995768. Its totient is φ = 25804800.

The previous prime is 64874011. The next prime is 64874027. The reversal of 64874020 is 2047846.

It can be written as a sum of positive squares in 4 ways, for example, as 7750656 + 57123364 = 2784^2 + 7558^2 .

It is not an unprimeable number, because it can be changed into a prime (64874027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5341 + ... + 12580.

It is an arithmetic number, because the mean of its divisors is an integer number (5708157).

Almost surely, 2^64874020 is an apocalyptic number.

It is an amenable number.

64874020 is an abundant number, since it is smaller than the sum of its proper divisors (72121748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64874020 is a wasteful number, since it uses less digits than its factorization.

64874020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18111 (or 18109 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 64874020 is about 8054.4410110199. The cubic root of 64874020 is about 401.8126483569.

The spelling of 64874020 in words is "sixty-four million, eight hundred seventy-four thousand, twenty".