632875991 has 4 divisors (see below), whose sum is σ = 690410184. Its totient is φ = 575341800.

The previous prime is 632875987. The next prime is 632876011. The reversal of 632875991 is 199578236.

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

It is not a de Polignac number, because 632875991 - 2² = 632875987 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 (632875931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28767080 + ... + 28767101.

It is an arithmetic number, because the mean of its divisors is an integer number (172602546).

Almost surely, 2^632875991 is an apocalyptic number.

632875991 is a deficient number, since it is larger than the sum of its proper divisors (57534193).

632875991 is a wasteful number, since it uses less digits than its factorization.

632875991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57534192.

The product of its digits is 816480, while the sum is 50.

The square root of 632875991 is about 25157.0266724826. The cubic root of 632875991 is about 858.5643936667.

The spelling of 632875991 in words is "six hundred thirty-two million, eight hundred seventy-five thousand, nine hundred ninety-one".