63616680 has 48 divisors (see below), whose sum is σ = 206755380. Its totient is φ = 16964352.

The previous prime is 63616673. The next prime is 63616687. The reversal of 63616680 is 8661636.

63616680 is a `hidden beast` number, since 636 + 16 + 6 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (63616673) and next prime (63616687).

It can be written as a sum of positive squares in 2 ways, for example, as 60933636 + 2683044 = 7806^2 + 1638^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (63616687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87997 + ... + 88716.

Almost surely, 2^63616680 is an apocalyptic number.

63616680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63616680 is an abundant number, since it is smaller than the sum of its proper divisors (143138700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63616680 is a wasteful number, since it uses less digits than its factorization.

63616680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176730 (or 176723 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 63616680 is about 7976.0065195560. The cubic root of 63616680 is about 399.1998170020.

It can be divided in two parts, 6361 and 6680, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 63616680 in words is "sixty-three million, six hundred sixteen thousand, six hundred eighty".