642610316 has 6 divisors (see below), whose sum is σ = 1124568060. Its totient is φ = 321305156.

The previous prime is 642610307. The next prime is 642610327. The reversal of 642610316 is 613016246.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80326286 + ... + 80326293.

It is an arithmetic number, because the mean of its divisors is an integer number (187428010).

Almost surely, 2^642610316 is an apocalyptic number.

It is an amenable number.

642610316 is a deficient number, since it is larger than the sum of its proper divisors (481957744).

642610316 is a wasteful number, since it uses less digits than its factorization.

642610316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160652583 (or 160652581 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 642610316 is about 25349.7596832791. The cubic root of 642610316 is about 862.9439024506.

The spelling of 642610316 in words is "six hundred forty-two million, six hundred ten thousand, three hundred sixteen".