63431660 has 12 divisors (see below), whose sum is σ = 133206528. Its totient is φ = 25372656.

The previous prime is 63431659. The next prime is 63431689. The reversal of 63431660 is 6613436.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585772 + ... + 1585811.

It is an arithmetic number, because the mean of its divisors is an integer number (11100544).

Almost surely, 2^63431660 is an apocalyptic number.

It is an amenable number.

63431660 is an abundant number, since it is smaller than the sum of its proper divisors (69774868).

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

63431660 is a wasteful number, since it uses less digits than its factorization.

63431660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171592 (or 3171590 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 63431660 is about 7964.3995379438. The cubic root of 63431660 is about 398.8124360522.

The spelling of 63431660 in words is "sixty-three million, four hundred thirty-one thousand, six hundred sixty".