670468240 has 80 divisors (see below), whose sum is σ = 1684610928. Its totient is φ = 246693888.

The previous prime is 670468229. The next prime is 670468241. The reversal of 670468240 is 42864076.

It can be written as a sum of positive squares in 8 ways, for example, as 20830096 + 649638144 = 4564^2 + 25488^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 670468240.

It is not an unprimeable number, because it can be changed into a prime (670468241) 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, 349524 + ... + 351436.

Almost surely, 2^670468240 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 670468240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842305464).

670468240 is an abundant number, since it is smaller than the sum of its proper divisors (1014142688).

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

670468240 is a wasteful number, since it uses less digits than its factorization.

670468240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276 (or 2270 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 670468240 is about 25893.4014760518. The cubic root of 670468240 is about 875.2378085595.

The spelling of 670468240 in words is "six hundred seventy million, four hundred sixty-eight thousand, two hundred forty".