670949394 has 32 divisors (see below), whose sum is σ = 1461240000. Its totient is φ = 204571584.

The previous prime is 670949371. The next prime is 670949401. The reversal of 670949394 is 493949076.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98169 + ... + 104780.

It is an arithmetic number, because the mean of its divisors is an integer number (45663750).

Almost surely, 2^670949394 is an apocalyptic number.

670949394 is an abundant number, since it is smaller than the sum of its proper divisors (790290606).

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

670949394 is a wasteful number, since it uses less digits than its factorization.

670949394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203002.

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 670949394 is about 25902.6908640782. The cubic root of 670949394 is about 875.4471266894.

The spelling of 670949394 in words is "six hundred seventy million, nine hundred forty-nine thousand, three hundred ninety-four".