670747842 has 24 divisors (see below), whose sum is σ = 1529776560. Its totient is φ = 211815000.

The previous prime is 670747829. The next prime is 670747859. The reversal of 670747842 is 248747076.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 980284 + ... + 980967.

It is an arithmetic number, because the mean of its divisors is an integer number (63740690).

Almost surely, 2^670747842 is an apocalyptic number.

670747842 is an abundant number, since it is smaller than the sum of its proper divisors (859028718).

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

670747842 is a wasteful number, since it uses less digits than its factorization.

670747842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961278 (or 1961275 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The square root of 670747842 is about 25898.8000108113. The cubic root of 670747842 is about 875.3594569922.

The spelling of 670747842 in words is "six hundred seventy million, seven hundred forty-seven thousand, eight hundred forty-two".