63677385 has 24 divisors (see below), whose sum is σ = 111126600. Its totient is φ = 33729792.

The previous prime is 63677371. The next prime is 63677399. The reversal of 63677385 is 58377636.

63677385 is a `hidden beast` number, since 636 + 7 + 7 + 3 + 8 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (63677371) and next prime (63677399).

It can be written as a sum of positive squares in 4 ways, for example, as 2039184 + 61638201 = 1428^2 + 7851^2 .

It is not a de Polignac number, because 63677385 - 2¹⁷ = 63546313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 63677385.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1957 + ... + 11453.

It is an arithmetic number, because the mean of its divisors is an integer number (4630275).

Almost surely, 2^63677385 is an apocalyptic number.

It is an amenable number.

63677385 is a deficient number, since it is larger than the sum of its proper divisors (47449215).

63677385 is a wasteful number, since it uses less digits than its factorization.

63677385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9657 (or 9654 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 63677385 is about 7979.8110879895. The cubic root of 63677385 is about 399.3267528983.

The spelling of 63677385 in words is "sixty-three million, six hundred seventy-seven thousand, three hundred eighty-five".