670887 has 24 divisors (see below), whose sum is σ = 1158144. Its totient is φ = 365904.

The previous prime is 670877. The next prime is 670897. The reversal of 670887 is 788076.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (670877) and next prime (670897).

It is not a de Polignac number, because 670887 - 2⁶ = 670823 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 670887.

It is not an unprimeable number, because it can be changed into a prime (670867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1218 + ... + 1680.

It is an arithmetic number, because the mean of its divisors is an integer number (48256).

2⁶⁷⁰⁸⁸⁷ is an apocalyptic number.

670887 is a deficient number, since it is larger than the sum of its proper divisors (487257).

670887 is a wasteful number, since it uses less digits than its factorization.

670887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 670887 is about 819.0769194648. The cubic root of 670887 is about 87.5419988855.

The spelling of 670887 in words is "six hundred seventy thousand, eight hundred eighty-seven".