670915 has 16 divisors (see below), whose sum is σ = 953280. Its totient is φ = 443520.

The previous prime is 670903. The next prime is 670919. The reversal of 670915 is 519076.

It is a happy number.

670915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 670915 - 2¹¹ = 668867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (670919) 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, 685 + ... + 1345.

It is an arithmetic number, because the mean of its divisors is an integer number (59580).

2⁶⁷⁰⁹¹⁵ is an apocalyptic number.

670915 is a deficient number, since it is larger than the sum of its proper divisors (282365).

670915 is a wasteful number, since it uses less digits than its factorization.

670915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 670915 is about 819.0940116983. The cubic root of 670915 is about 87.5432167467.

It can be divided in two parts, 6709 and 15, that added together give a square (6724 = 82²).

The spelling of 670915 in words is "six hundred seventy thousand, nine hundred fifteen".