731630887 has 8 divisors (see below), whose sum is σ = 834258096. Its totient is φ = 635624832.

The previous prime is 731630881. The next prime is 731630899. The reversal of 731630887 is 788036137.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 731630887 - 2²³ = 723242279 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 (731630881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655053 + ... + 1655494.

It is an arithmetic number, because the mean of its divisors is an integer number (104282262).

Almost surely, 2^731630887 is an apocalyptic number.

731630887 is a deficient number, since it is larger than the sum of its proper divisors (102627209).

731630887 is a wasteful number, since it uses less digits than its factorization.

731630887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310577.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 731630887 is about 27048.6762522679. The cubic root of 731630887 is about 901.0813697375.

The spelling of 731630887 in words is "seven hundred thirty-one million, six hundred thirty thousand, eight hundred eighty-seven".