402634564 has 6 divisors (see below), whose sum is σ = 704610494. Its totient is φ = 201317280.

The previous prime is 402634559. The next prime is 402634591. The reversal of 402634564 is 465436204.

It can be written as a sum of positive squares in only one way, i.e., 394340164 + 8294400 = 19858^2 + 2880^2 .

It is a super-2 number, since 2×402634564² = 324229184254940192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50329317 + ... + 50329324.

Almost surely, 2^402634564 is an apocalyptic number.

It is an amenable number.

402634564 is a deficient number, since it is larger than the sum of its proper divisors (301975930).

402634564 is a wasteful number, since it uses less digits than its factorization.

402634564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100658645 (or 100658643 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 402634564 is about 20065.7560036994. The cubic root of 402634564 is about 738.4203973218.

The spelling of 402634564 in words is "four hundred two million, six hundred thirty-four thousand, five hundred sixty-four".