64021874 has 8 divisors (see below), whose sum is σ = 109751808. Its totient is φ = 27437940.

The previous prime is 64021861. The next prime is 64021901. The reversal of 64021874 is 47812046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64021874.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2286482 + ... + 2286509.

It is an arithmetic number, because the mean of its divisors is an integer number (13718976).

Almost surely, 2^64021874 is an apocalyptic number.

64021874 is a deficient number, since it is larger than the sum of its proper divisors (45729934).

64021874 is a wasteful number, since it uses less digits than its factorization.

64021874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573000.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 64021874 is about 8001.3670082055. The cubic root of 64021874 is about 400.0455656426.

The spelling of 64021874 in words is "sixty-four million, twenty-one thousand, eight hundred seventy-four".