642933336 has 32 divisors (see below), whose sum is σ = 1701883440. Its totient is φ = 201704448.

The previous prime is 642933323. The next prime is 642933359. The reversal of 642933336 is 633339246.

It is a junction number, because it is equal to n+sod(n) for n = 642933294 and 642933303.

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, 787501 + ... + 788316.

Almost surely, 2^642933336 is an apocalyptic number.

It is an amenable number.

642933336 is an abundant number, since it is smaller than the sum of its proper divisors (1058950104).

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

642933336 is a wasteful number, since it uses less digits than its factorization.

642933336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575843 (or 1575839 counting only the distinct ones).

The product of its digits is 209952, while the sum is 39.

The square root of 642933336 is about 25356.1301463768. The cubic root of 642933336 is about 863.0884698188.

The spelling of 642933336 in words is "six hundred forty-two million, nine hundred thirty-three thousand, three hundred thirty-six".