63977973 has 16 divisors (see below), whose sum is σ = 92085120. Its totient is φ = 39389504.

The previous prime is 63977941. The next prime is 63977981. The reversal of 63977973 is 37977936.

It is a cyclic number.

It is not a de Polignac number, because 63977973 - 2⁵ = 63977941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63977993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13986 + ... + 17987.

It is an arithmetic number, because the mean of its divisors is an integer number (5755320).

Almost surely, 2^63977973 is an apocalyptic number.

It is an amenable number.

63977973 is a deficient number, since it is larger than the sum of its proper divisors (28107147).

63977973 is a wasteful number, since it uses less digits than its factorization.

63977973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32028.

The product of its digits is 1500282, while the sum is 51.

The square root of 63977973 is about 7998.6231940253. The cubic root of 63977973 is about 399.9541051510.

The spelling of 63977973 in words is "sixty-three million, nine hundred seventy-seven thousand, nine hundred seventy-three".