642662962 has 4 divisors (see below), whose sum is σ = 963994446. Its totient is φ = 321331480.

The previous prime is 642662959. The next prime is 642662989. The reversal of 642662962 is 269266246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 600789121 + 41873841 = 24511^2 + 6471^2 .

It is a super-2 number, since 2×642662962² = 826031365453226888, 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, 160665739 + ... + 160665742.

Almost surely, 2^642662962 is an apocalyptic number.

642662962 is a deficient number, since it is larger than the sum of its proper divisors (321331484).

642662962 is a wasteful number, since it uses less digits than its factorization.

642662962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321331483.

The product of its digits is 373248, while the sum is 43.

The square root of 642662962 is about 25350.7980544992. The cubic root of 642662962 is about 862.9674674339.

The spelling of 642662962 in words is "six hundred forty-two million, six hundred sixty-two thousand, nine hundred sixty-two".