761631907 has 4 divisors (see below), whose sum is σ = 762646816. Its totient is φ = 760617000.

The previous prime is 761631881. The next prime is 761631917. The reversal of 761631907 is 709136167.

It is a happy number.

761631907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 761631907 - 2⁷ = 761631779 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 761631907.

It is not an unprimeable number, because it can be changed into a prime (761631917) 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, 506328 + ... + 507829.

It is an arithmetic number, because the mean of its divisors is an integer number (190661704).

Almost surely, 2^761631907 is an apocalyptic number.

761631907 is a deficient number, since it is larger than the sum of its proper divisors (1014909).

761631907 is a wasteful number, since it uses less digits than its factorization.

761631907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014908.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 761631907 is about 27597.6793770781. The cubic root of 761631907 is about 913.2332384343.

The spelling of 761631907 in words is "seven hundred sixty-one million, six hundred thirty-one thousand, nine hundred seven".