63621005 has 16 divisors (see below), whose sum is σ = 87394944. Its totient is φ = 43554240.

The previous prime is 63621001. The next prime is 63621007. The reversal of 63621005 is 50012636.

It is not a de Polignac number, because 63621005 - 2² = 63621001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63621001) 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, 28790 + ... + 30920.

It is an arithmetic number, because the mean of its divisors is an integer number (5462184).

Almost surely, 2^63621005 is an apocalyptic number.

It is an amenable number.

63621005 is a deficient number, since it is larger than the sum of its proper divisors (23773939).

63621005 is a wasteful number, since it uses less digits than its factorization.

63621005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 63621005 is about 7976.2776406040. The cubic root of 63621005 is about 399.2088633720.

The spelling of 63621005 in words is "sixty-three million, six hundred twenty-one thousand, five".