63214915 has 4 divisors (see below), whose sum is σ = 75857904. Its totient is φ = 50571928.

The previous prime is 63214913. The next prime is 63214939. The reversal of 63214915 is 51941236.

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 63214915 - 2¹ = 63214913 is a prime.

It is a super-2 number, since 2×63214915² = 7992250956914450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63214913) 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, 6321487 + ... + 6321496.

It is an arithmetic number, because the mean of its divisors is an integer number (18964476).

Almost surely, 2^63214915 is an apocalyptic number.

63214915 is a deficient number, since it is larger than the sum of its proper divisors (12642989).

63214915 is a wasteful number, since it uses less digits than its factorization.

63214915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12642988.

The product of its digits is 6480, while the sum is 31.

The square root of 63214915 is about 7950.7807792694. The cubic root of 63214915 is about 398.3576723786.

It can be divided in two parts, 6321 and 4915, that added together give a square (11236 = 106²).

The spelling of 63214915 in words is "sixty-three million, two hundred fourteen thousand, nine hundred fifteen".