670081951 has 16 divisors (see below), whose sum is σ = 858009600. Its totient is φ = 508027680.

The previous prime is 670081921. The next prime is 670081963. The reversal of 670081951 is 159180076.

It is a cyclic number.

It is not a de Polignac number, because 670081951 - 2⁷ = 670081823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 670081951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670081921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114751 + ... + 120448.

It is an arithmetic number, because the mean of its divisors is an integer number (53625600).

Almost surely, 2^670081951 is an apocalyptic number.

670081951 is a deficient number, since it is larger than the sum of its proper divisors (187927649).

670081951 is a wasteful number, since it uses less digits than its factorization.

670081951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235254.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 670081951 is about 25885.9411843572. The cubic root of 670081951 is about 875.0696874021.

The spelling of 670081951 in words is "six hundred seventy million, eighty-one thousand, nine hundred fifty-one".