670243836 has 24 divisors (see below), whose sum is σ = 1655897040. Its totient is φ = 210272512.

The previous prime is 670243787. The next prime is 670243843. The reversal of 670243836 is 638342076.

It is a junction number, because it is equal to n+sod(n) for n = 670243794 and 670243803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1642551 + ... + 1642958.

It is an arithmetic number, because the mean of its divisors is an integer number (68995710).

Almost surely, 2^670243836 is an apocalyptic number.

It is an amenable number.

670243836 is an abundant number, since it is smaller than the sum of its proper divisors (985653204).

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

670243836 is a wasteful number, since it uses less digits than its factorization.

670243836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285533 (or 3285531 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 670243836 is about 25889.0678858857. The cubic root of 670243836 is about 875.1401510470.

The spelling of 670243836 in words is "six hundred seventy million, two hundred forty-three thousand, eight hundred thirty-six".