670690215 has 96 divisors (see below), whose sum is σ = 1335559680. Its totient is φ = 308613888.

The previous prime is 670690199. The next prime is 670690217. The reversal of 670690215 is 512096076.

It is not a de Polignac number, because 670690215 - 2⁴ = 670690199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 670690215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670690217) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 922182 + ... + 922908.

It is an arithmetic number, because the mean of its divisors is an integer number (13912080).

Almost surely, 2^670690215 is an apocalyptic number.

670690215 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

670690215 is a deficient number, since it is larger than the sum of its proper divisors (664869465).

670690215 is a wasteful number, since it uses less digits than its factorization.

670690215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 670690215 is about 25897.6874450210. The cubic root of 670690215 is about 875.3343875692.

The spelling of 670690215 in words is "six hundred seventy million, six hundred ninety thousand, two hundred fifteen".