646714131 has 16 divisors (see below), whose sum is σ = 1001626368. Its totient is φ = 363492000.

The previous prime is 646714097. The next prime is 646714141. The reversal of 646714131 is 131417646.

It is not a de Polignac number, because 646714131 - 2¹⁴ = 646697747 is a prime.

It is a super-2 number, since 2×646714131² = 836478334470170322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 646714092 and 646714101.

It is not an unprimeable number, because it can be changed into a prime (646714141) 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, 251145 + ... + 253706.

It is an arithmetic number, because the mean of its divisors is an integer number (62601648).

Almost surely, 2^646714131 is an apocalyptic number.

646714131 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

646714131 is a deficient number, since it is larger than the sum of its proper divisors (354912237).

646714131 is a wasteful number, since it uses less digits than its factorization.

646714131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504922.

The product of its digits is 12096, while the sum is 33.

The square root of 646714131 is about 25430.5747280709. The cubic root of 646714131 is about 864.7769730287.

The spelling of 646714131 in words is "six hundred forty-six million, seven hundred fourteen thousand, one hundred thirty-one".