63979611 has 4 divisors (see below), whose sum is σ = 85306152. Its totient is φ = 42653072.

The previous prime is 63979607. The next prime is 63979613. The reversal of 63979611 is 11697936.

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

It is a cyclic number.

It is not a de Polignac number, because 63979611 - 2² = 63979607 is a prime.

It is a super-2 number, since 2×63979611² = 8186781247422642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63979613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10663266 + ... + 10663271.

It is an arithmetic number, because the mean of its divisors is an integer number (21326538).

Almost surely, 2^63979611 is an apocalyptic number.

63979611 is a deficient number, since it is larger than the sum of its proper divisors (21326541).

63979611 is a wasteful number, since it uses less digits than its factorization.

63979611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21326540.

The product of its digits is 61236, while the sum is 42.

The square root of 63979611 is about 7998.7255859918. The cubic root of 63979611 is about 399.9575184051.

The spelling of 63979611 in words is "sixty-three million, nine hundred seventy-nine thousand, six hundred eleven".