670428831 has 16 divisors (see below), whose sum is σ = 901756800. Its totient is φ = 443037408.

The previous prime is 670428827. The next prime is 670428877. The reversal of 670428831 is 138824076.

It is not a de Polignac number, because 670428831 - 2² = 670428827 is a prime.

It is a super-2 number, since 2×670428831² = 898949634872053122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 670428831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670428631) 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, 524365 + ... + 525641.

It is an arithmetic number, because the mean of its divisors is an integer number (56359800).

Almost surely, 2^670428831 is an apocalyptic number.

670428831 is a deficient number, since it is larger than the sum of its proper divisors (231327969).

670428831 is a wasteful number, since it uses less digits than its factorization.

670428831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 670428831 is about 25892.6404794876. The cubic root of 670428831 is about 875.2206598861.

The spelling of 670428831 in words is "six hundred seventy million, four hundred twenty-eight thousand, eight hundred thirty-one".