670985361 has 24 divisors (see below), whose sum is σ = 1029600000. Its totient is φ = 419880672.

The previous prime is 670985333. The next prime is 670985407. The reversal of 670985361 is 163589076.

It is a happy number.

It is not a de Polignac number, because 670985361 - 2¹³ = 670977169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (670985321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 640 + ... + 36638.

It is an arithmetic number, because the mean of its divisors is an integer number (42900000).

Almost surely, 2^670985361 is an apocalyptic number.

It is an amenable number.

670985361 is a deficient number, since it is larger than the sum of its proper divisors (358614639).

670985361 is a wasteful number, since it uses less digits than its factorization.

670985361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36133 (or 36130 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 670985361 is about 25903.3851262726. The cubic root of 670985361 is about 875.4627695205.

The spelling of 670985361 in words is "six hundred seventy million, nine hundred eighty-five thousand, three hundred sixty-one".