63299923 has 4 divisors (see below), whose sum is σ = 65341888. Its totient is φ = 61257960.

The previous prime is 63299917. The next prime is 63299939. The reversal of 63299923 is 32999236.

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 63299923 - 2¹⁷ = 63168851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63299923.

It is not an unprimeable number, because it can be changed into a prime (63299903) 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, 1020936 + ... + 1020997.

It is an arithmetic number, because the mean of its divisors is an integer number (16335472).

Almost surely, 2^63299923 is an apocalyptic number.

63299923 is a deficient number, since it is larger than the sum of its proper divisors (2041965).

63299923 is a wasteful number, since it uses less digits than its factorization.

63299923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041964.

The product of its digits is 157464, while the sum is 43.

The square root of 63299923 is about 7956.1248733287. The cubic root of 63299923 is about 398.5361556845.

The spelling of 63299923 in words is "sixty-three million, two hundred ninety-nine thousand, nine hundred twenty-three".