632390287 has 4 divisors (see below), whose sum is σ = 641829016. Its totient is φ = 622951560.

The previous prime is 632390279. The next prime is 632390299. The reversal of 632390287 is 782093236.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 632390287 - 2³ = 632390279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632390237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4719264 + ... + 4719397.

It is an arithmetic number, because the mean of its divisors is an integer number (160457254).

Almost surely, 2^632390287 is an apocalyptic number.

632390287 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

632390287 is a deficient number, since it is larger than the sum of its proper divisors (9438729).

632390287 is an equidigital number, since it uses as much as digits as its factorization.

632390287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9438728.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 632390287 is about 25147.3713735651. The cubic root of 632390287 is about 858.3447008727.

The spelling of 632390287 in words is "six hundred thirty-two million, three hundred ninety thousand, two hundred eighty-seven".