670865800 has 96 divisors (see below), whose sum is σ = 1729800000. Its totient is φ = 239904000.

The previous prime is 670865777. The next prime is 670865837. The reversal of 670865800 is 8568076.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131701 + ... + 136699.

It is an arithmetic number, because the mean of its divisors is an integer number (18018750).

Almost surely, 2^670865800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670865800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864900000).

670865800 is an abundant number, since it is smaller than the sum of its proper divisors (1058934200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670865800 is a wasteful number, since it uses less digits than its factorization.

670865800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087 (or 5078 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 670865800 is about 25901.0771976765. The cubic root of 670865800 is about 875.4107676797.

The spelling of 670865800 in words is "six hundred seventy million, eight hundred sixty-five thousand, eight hundred".