63920933 has 4 divisors (see below), whose sum is σ = 66700128. Its totient is φ = 61141740.

The previous prime is 63920929. The next prime is 63920951. The reversal of 63920933 is 33902936.

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 not a de Polignac number, because 63920933 - 2² = 63920929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63920893 and 63920902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63920033) 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, 1389563 + ... + 1389608.

It is an arithmetic number, because the mean of its divisors is an integer number (16675032).

Almost surely, 2^63920933 is an apocalyptic number.

It is an amenable number.

63920933 is a deficient number, since it is larger than the sum of its proper divisors (2779195).

63920933 is a wasteful number, since it uses less digits than its factorization.

63920933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779194.

The product of its (nonzero) digits is 26244, while the sum is 35.

The square root of 63920933 is about 7995.0567852893. The cubic root of 63920933 is about 399.8352092026.

The spelling of 63920933 in words is "sixty-three million, nine hundred twenty thousand, nine hundred thirty-three".