670408056 has 256 divisors, whose sum is σ = 2081116800. Its totient is φ = 199065600.

The previous prime is 670408049. The next prime is 670408061. The reversal of 670408056 is 650804076.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 670408056.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9183636 + ... + 9183708.

Almost surely, 2^670408056 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 670408056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1040558400).

670408056 is an abundant number, since it is smaller than the sum of its proper divisors (1410708744).

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

670408056 is a wasteful number, since it uses less digits than its factorization.

670408056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 670408056 is about 25892.2393006090. The cubic root of 670408056 is about 875.2116194550.

The spelling of 670408056 in words is "six hundred seventy million, four hundred eight thousand, fifty-six".