670419990 has 96 divisors (see below), whose sum is σ = 1914101280. Its totient is φ = 168251904.

The previous prime is 670419979. The next prime is 670420013. The reversal of 670419990 is 99914076.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33196 + ... + 49424.

It is an arithmetic number, because the mean of its divisors is an integer number (19938555).

Almost surely, 2^670419990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670419990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957050640).

670419990 is an abundant number, since it is smaller than the sum of its proper divisors (1243681290).

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

670419990 is a wasteful number, since it uses less digits than its factorization.

670419990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16268 (or 16256 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 670419990 is about 25892.4697547376. The cubic root of 670419990 is about 875.2168126670.

The spelling of 670419990 in words is "six hundred seventy million, four hundred nineteen thousand, nine hundred ninety".