63972026 has 4 divisors (see below), whose sum is σ = 95958042. Its totient is φ = 31986012.

The previous prime is 63972019. The next prime is 63972047. The reversal of 63972026 is 62027936.

It is a happy number.

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., 62647225 + 1324801 = 7915^2 + 1151^2 .

It is a super-2 number, since 2×63972026² = 8184840221089352, 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, 15993005 + ... + 15993008.

Almost surely, 2^63972026 is an apocalyptic number.

63972026 is a deficient number, since it is larger than the sum of its proper divisors (31986016).

63972026 is a wasteful number, since it uses less digits than its factorization.

63972026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31986015.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 63972026 is about 7998.2514339073. The cubic root of 63972026 is about 399.9417123401.

The spelling of 63972026 in words is "sixty-three million, nine hundred seventy-two thousand, twenty-six".