632432387 has 4 divisors (see below), whose sum is σ = 643151640. Its totient is φ = 621713136.

The previous prime is 632432371. The next prime is 632432389. The reversal of 632432387 is 783234236.

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 632432387 - 2⁴ = 632432371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 632432387.

It is not an unprimeable number, because it can be changed into a prime (632432389) 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 3 ways as a sum of consecutive naturals, for example, 5359538 + ... + 5359655.

It is an arithmetic number, because the mean of its divisors is an integer number (160787910).

Almost surely, 2^632432387 is an apocalyptic number.

632432387 is a deficient number, since it is larger than the sum of its proper divisors (10719253).

632432387 is a wasteful number, since it uses less digits than its factorization.

632432387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10719252.

The product of its digits is 145152, while the sum is 38.

The square root of 632432387 is about 25148.2084252537. The cubic root of 632432387 is about 858.3637479236.

The spelling of 632432387 in words is "six hundred thirty-two million, four hundred thirty-two thousand, three hundred eighty-seven".