63916605 has 12 divisors (see below), whose sum is σ = 110788860. Its totient is φ = 34088832.

The previous prime is 63916597. The next prime is 63916613. The reversal of 63916605 is 50661936.

63916605 is a `hidden beast` number, since 6 + 39 + 16 + 605 = 666.

It is an interprime number because it is at equal distance from previous prime (63916597) and next prime (63916613).

It can be written as a sum of positive squares in 2 ways, for example, as 46826649 + 17089956 = 6843^2 + 4134^2 .

It is not a de Polignac number, because 63916605 - 2³ = 63916597 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 63916605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 710140 + ... + 710229.

It is an arithmetic number, because the mean of its divisors is an integer number (9232405).

Almost surely, 2^63916605 is an apocalyptic number.

It is an amenable number.

63916605 is a deficient number, since it is larger than the sum of its proper divisors (46872255).

63916605 is a wasteful number, since it uses less digits than its factorization.

63916605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420380 (or 1420377 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 63916605 is about 7994.7861134617. The cubic root of 63916605 is about 399.8261848984.

It can be divided in two parts, 6391 and 6605, that added together give a square (12996 = 114²).

The spelling of 63916605 in words is "sixty-three million, nine hundred sixteen thousand, six hundred five".