670820436 has 72 divisors (see below), whose sum is σ = 1992148704. Its totient is φ = 187640640.

The previous prime is 670820419. The next prime is 670820467. The reversal of 670820436 is 634028076.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 670820436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60006 + ... + 70301.

It is an arithmetic number, because the mean of its divisors is an integer number (27668732).

Almost surely, 2^670820436 is an apocalyptic number.

670820436 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

670820436 is an abundant number, since it is smaller than the sum of its proper divisors (1321328268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670820436 is a wasteful number, since it uses less digits than its factorization.

670820436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130341 (or 130336 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 670820436 is about 25900.2014663979. The cubic root of 670820436 is about 875.3910354524.

The spelling of 670820436 in words is "six hundred seventy million, eight hundred twenty thousand, four hundred thirty-six".