63087640 has 64 divisors (see below), whose sum is σ = 176981760. Its totient is φ = 19662720.

The previous prime is 63087637. The next prime is 63087641. The reversal of 63087640 is 4678036.

It is a junction number, because it is equal to n+sod(n) for n = 63087596 and 63087605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63087641) 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, 7162 + ... + 13321.

It is an arithmetic number, because the mean of its divisors is an integer number (2765340).

Almost surely, 2^63087640 is an apocalyptic number.

It is an amenable number.

63087640 is an abundant number, since it is smaller than the sum of its proper divisors (113894120).

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

63087640 is a wasteful number, since it uses less digits than its factorization.

63087640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20512 (or 20508 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 63087640 is about 7942.7728155852. The cubic root of 63087640 is about 398.0901456540.

The spelling of 63087640 in words is "sixty-three million, eighty-seven thousand, six hundred forty".