63920501 has 4 divisors (see below), whose sum is σ = 64387212. Its totient is φ = 63453792.

The previous prime is 63920477. The next prime is 63920513. The reversal of 63920501 is 10502936.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50779876 + 13140625 = 7126^2 + 3625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63920501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63920531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233150 + ... + 233423.

It is an arithmetic number, because the mean of its divisors is an integer number (16096803).

Almost surely, 2^63920501 is an apocalyptic number.

It is an amenable number.

63920501 is a deficient number, since it is larger than the sum of its proper divisors (466711).

63920501 is a wasteful number, since it uses less digits than its factorization.

63920501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466710.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 63920501 is about 7995.0297685500. The cubic root of 63920501 is about 399.8343084586.

The spelling of 63920501 in words is "sixty-three million, nine hundred twenty thousand, five hundred one".