63132981 has 16 divisors (see below), whose sum is σ = 85176000. Its totient is φ = 41592960.

The previous prime is 63132959. The next prime is 63132983. The reversal of 63132981 is 18923136.

It is not a de Polignac number, because 63132981 - 2¹¹ = 63130933 is a prime.

It is a super-2 number, since 2×63132981² = 7971546579892722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63132983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126270 + ... + 126768.

It is an arithmetic number, because the mean of its divisors is an integer number (5323500).

Almost surely, 2^63132981 is an apocalyptic number.

It is an amenable number.

63132981 is a deficient number, since it is larger than the sum of its proper divisors (22043019).

63132981 is a wasteful number, since it uses less digits than its factorization.

63132981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916.

The product of its digits is 7776, while the sum is 33.

The square root of 63132981 is about 7945.6265328796. The cubic root of 63132981 is about 398.1854917625.

The spelling of 63132981 in words is "sixty-three million, one hundred thirty-two thousand, nine hundred eighty-one".