670171015 has 4 divisors (see below), whose sum is σ = 804205224. Its totient is φ = 536136808.

The previous prime is 670171003. The next prime is 670171031. The reversal of 670171015 is 510171076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 670171015 - 2⁷ = 670170887 is a prime.

It is a super-2 number, since 2×670171015² = 898258378692260450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67017097 + ... + 67017106.

It is an arithmetic number, because the mean of its divisors is an integer number (201051306).

Almost surely, 2^670171015 is an apocalyptic number.

670171015 is a deficient number, since it is larger than the sum of its proper divisors (134034209).

670171015 is a wasteful number, since it uses less digits than its factorization.

670171015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134034208.

The product of its (nonzero) digits is 1470, while the sum is 28.

The square root of 670171015 is about 25887.6614432436. The cubic root of 670171015 is about 875.1084556721.

The spelling of 670171015 in words is "six hundred seventy million, one hundred seventy-one thousand, fifteen".