646052052 has 24 divisors (see below), whose sum is σ = 1514044000. Its totient is φ = 214409376.

The previous prime is 646051999. The next prime is 646052063. The reversal of 646052052 is 250250646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114802 + ... + 120297.

Almost surely, 2^646052052 is an apocalyptic number.

It is an amenable number.

646052052 is an abundant number, since it is smaller than the sum of its proper divisors (867991948).

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

646052052 is a wasteful number, since it uses less digits than its factorization.

646052052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235335 (or 235333 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 646052052 is about 25417.5540129258. The cubic root of 646052052 is about 864.4817647124.

The spelling of 646052052 in words is "six hundred forty-six million, fifty-two thousand, fifty-two".