63879937 has 4 divisors (see below), whose sum is σ = 69687216. Its totient is φ = 58072660.

The previous prime is 63879887. The next prime is 63879943. The reversal of 63879937 is 73997836.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63879937 is a prime.

It is a super-2 number, since 2×63879937² = 8161292702247938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63879967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2903623 + ... + 2903644.

It is an arithmetic number, because the mean of its divisors is an integer number (17421804).

Almost surely, 2^63879937 is an apocalyptic number.

It is an amenable number.

63879937 is a deficient number, since it is larger than the sum of its proper divisors (5807279).

63879937 is a wasteful number, since it uses less digits than its factorization.

63879937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5807278.

The product of its digits is 1714608, while the sum is 52.

The square root of 63879937 is about 7992.4925398777. The cubic root of 63879937 is about 399.7497121727.

It can be divided in two parts, 638799 and 37, that added together give a palindrome (638836).

The spelling of 63879937 in words is "sixty-three million, eight hundred seventy-nine thousand, nine hundred thirty-seven".