670087 has 4 divisors (see below), whose sum is σ = 731016. Its totient is φ = 609160.

The previous prime is 670051. The next prime is 670097. The reversal of 670087 is 780076.

670087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 670087 - 2¹⁵ = 637319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30448 + ... + 30469.

It is an arithmetic number, because the mean of its divisors is an integer number (182754).

2⁶⁷⁰⁰⁸⁷ is an apocalyptic number.

670087 is a deficient number, since it is larger than the sum of its proper divisors (60929).

670087 is a wasteful number, since it uses less digits than its factorization.

670087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60928.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 670087 is about 818.5884191705. The cubic root of 670087 is about 87.5071885251.

The spelling of 670087 in words is "six hundred seventy thousand, eighty-seven".