782097631 has 16 divisors (see below), whose sum is σ = 968419584. Its totient is φ = 616258944.

The previous prime is 782097611. The next prime is 782097637. The reversal of 782097631 is 136790287.

It is a happy number.

It is not a de Polignac number, because 782097631 - 2⁹ = 782097119 is a prime.

It is a super-2 number, since 2×782097631² = 1223353408831624322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (782097637) 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, 71305 + ... + 81538.

It is an arithmetic number, because the mean of its divisors is an integer number (60526224).

Almost surely, 2^782097631 is an apocalyptic number.

782097631 is a deficient number, since it is larger than the sum of its proper divisors (186321953).

782097631 is a wasteful number, since it uses less digits than its factorization.

782097631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152910.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 782097631 is about 27966.0084924538. The cubic root of 782097631 is about 921.3408421951.

The spelling of 782097631 in words is "seven hundred eighty-two million, ninety-seven thousand, six hundred thirty-one".