642576296 has 8 divisors (see below), whose sum is σ = 1204830570. Its totient is φ = 321288144.

The previous prime is 642576281. The next prime is 642576307. The reversal of 642576296 is 692675246.

It can be written as a sum of positive squares in only one way, i.e., 544288900 + 98287396 = 23330^2 + 9914^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 642576296.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40161011 + ... + 40161026.

Almost surely, 2^642576296 is an apocalyptic number.

It is an amenable number.

642576296 is a deficient number, since it is larger than the sum of its proper divisors (562254274).

642576296 is a wasteful number, since it uses less digits than its factorization.

642576296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80322043 (or 80322039 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 47.

The square root of 642576296 is about 25349.0886621196. The cubic root of 642576296 is about 862.9286740046.

The spelling of 642576296 in words is "six hundred forty-two million, five hundred seventy-six thousand, two hundred ninety-six".