670752690 has 16 divisors (see below), whose sum is σ = 1609806528. Its totient is φ = 178867376.

The previous prime is 670752653. The next prime is 670752707. The reversal of 670752690 is 96257076.

It is a happy number.

It is a super-3 number, since 3×670752690³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 11179182 + ... + 11179241.

It is an arithmetic number, because the mean of its divisors is an integer number (100612908).

Almost surely, 2^670752690 is an apocalyptic number.

670752690 is an abundant number, since it is smaller than the sum of its proper divisors (939053838).

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

670752690 is a wasteful number, since it uses less digits than its factorization.

670752690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22358433.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 670752690 is about 25898.8936057122. The cubic root of 670752690 is about 875.3615659479.

The spelling of 670752690 in words is "six hundred seventy million, seven hundred fifty-two thousand, six hundred ninety".