63215379 has 12 divisors (see below), whose sum is σ = 93034656. Its totient is φ = 41348112.

The previous prime is 63215377. The next prime is 63215381. The reversal of 63215379 is 97351236.

63215379 is a `hidden beast` number, since 632 + 15 + 3 + 7 + 9 = 666.

63215379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (63215377) and next prime (63215381).

It is not a de Polignac number, because 63215379 - 2¹ = 63215377 is a prime.

It is a super-2 number, since 2×63215379² = 7992368284227282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63215377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65787 + ... + 66740.

It is an arithmetic number, because the mean of its divisors is an integer number (7752888).

Almost surely, 2^63215379 is an apocalyptic number.

63215379 is a deficient number, since it is larger than the sum of its proper divisors (29819277).

63215379 is a wasteful number, since it uses less digits than its factorization.

63215379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132586 (or 132583 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 63215379 is about 7950.8099587401. The cubic root of 63215379 is about 398.3586470300.

The spelling of 63215379 in words is "sixty-three million, two hundred fifteen thousand, three hundred seventy-nine".