631764345 has 64 divisors (see below), whose sum is σ = 1146470400. Its totient is φ = 295384320.

The previous prime is 631764311. The next prime is 631764347. The reversal of 631764345 is 543467136.

It is not a de Polignac number, because 631764345 - 2⁹ = 631763833 is a prime.

It is a super-2 number, since 2×631764345² = 798252375226558050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (631764347) 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 63 ways as a sum of consecutive naturals, for example, 201651 + ... + 204759.

It is an arithmetic number, because the mean of its divisors is an integer number (17913600).

Almost surely, 2^631764345 is an apocalyptic number.

It is an amenable number.

631764345 is a deficient number, since it is larger than the sum of its proper divisors (514706055).

631764345 is a wasteful number, since it uses less digits than its factorization.

631764345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3190.

The product of its digits is 181440, while the sum is 39.

The square root of 631764345 is about 25134.9228166708. The cubic root of 631764345 is about 858.0614099090.

The spelling of 631764345 in words is "six hundred thirty-one million, seven hundred sixty-four thousand, three hundred forty-five".