670965400 has 96 divisors (see below), whose sum is σ = 1831177440. Its totient is φ = 223810560.

The previous prime is 670965391. The next prime is 670965433. The reversal of 670965400 is 4569076.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 670965400.

It is a congruent number.

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, 45324 + ... + 58276.

It is an arithmetic number, because the mean of its divisors is an integer number (19074765).

Almost surely, 2^670965400 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 670965400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915588720).

670965400 is an abundant number, since it is smaller than the sum of its proper divisors (1160212040).

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

670965400 is a wasteful number, since it uses less digits than its factorization.

670965400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13013 (or 13004 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 670965400 is about 25902.9998262749. Note that the first 3 decimals coincide. The cubic root of 670965400 is about 875.4540881162.

The spelling of 670965400 in words is "six hundred seventy million, nine hundred sixty-five thousand, four hundred".