63680531 has 8 divisors (see below), whose sum is σ = 64222704. Its totient is φ = 63141120.

The previous prime is 63680509. The next prime is 63680563. The reversal of 63680531 is 13508636.

63680531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63680531 - 2²² = 59486227 is a prime.

It is a super-2 number, since 2×63680531² = 8110420056883922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63680581) 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 7 ways as a sum of consecutive naturals, for example, 78116 + ... + 78926.

It is an arithmetic number, because the mean of its divisors is an integer number (8027838).

Almost surely, 2^63680531 is an apocalyptic number.

63680531 is a deficient number, since it is larger than the sum of its proper divisors (542173).

63680531 is a wasteful number, since it uses less digits than its factorization.

63680531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 63680531 is about 7980.0082080158. The cubic root of 63680531 is about 399.3333290753. Note that the first 4 decimals are identical.

The spelling of 63680531 in words is "sixty-three million, six hundred eighty thousand, five hundred thirty-one".