64874228 has 6 divisors (see below), whose sum is σ = 113529906. Its totient is φ = 32437112.

The previous prime is 64874203. The next prime is 64874263. The reversal of 64874228 is 82247846.

It can be written as a sum of positive squares in only one way, i.e., 36699364 + 28174864 = 6058^2 + 5308^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8109275 + ... + 8109282.

It is an arithmetic number, because the mean of its divisors is an integer number (18921651).

Almost surely, 2^64874228 is an apocalyptic number.

It is an amenable number.

64874228 is a deficient number, since it is larger than the sum of its proper divisors (48655678).

64874228 is a wasteful number, since it uses less digits than its factorization.

64874228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16218561 (or 16218559 counting only the distinct ones).

The product of its digits is 172032, while the sum is 41.

The square root of 64874228 is about 8054.4539231409. The cubic root of 64874228 is about 401.8130777889.

The spelling of 64874228 in words is "sixty-four million, eight hundred seventy-four thousand, two hundred twenty-eight".