63215912 has 8 divisors (see below), whose sum is σ = 118529850. Its totient is φ = 31607952.

The previous prime is 63215903. The next prime is 63215923. The reversal of 63215912 is 21951236.

It can be written as a sum of positive squares in only one way, i.e., 55741156 + 7474756 = 7466^2 + 2734^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3950987 + ... + 3951002.

Almost surely, 2^63215912 is an apocalyptic number.

It is an amenable number.

63215912 is a deficient number, since it is larger than the sum of its proper divisors (55313938).

63215912 is a wasteful number, since it uses less digits than its factorization.

63215912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7901995 (or 7901991 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 63215912 is about 7950.8434772671. The cubic root of 63215912 is about 398.3597666128.

The spelling of 63215912 in words is "sixty-three million, two hundred fifteen thousand, nine hundred twelve".