670531380 has 48 divisors (see below), whose sum is σ = 1878629760. Its totient is φ = 178699648.

The previous prime is 670531321. The next prime is 670531447. The reversal of 670531380 is 83135076.

It is a happy number.

It is a super-2 number, since 2×670531380² = 899224663129408800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165337 + ... + 169343.

It is an arithmetic number, because the mean of its divisors is an integer number (39138120).

Almost surely, 2^670531380 is an apocalyptic number.

670531380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

670531380 is an abundant number, since it is smaller than the sum of its proper divisors (1208098380).

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

670531380 is a wasteful number, since it uses less digits than its factorization.

670531380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6808 (or 6806 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 670531380 is about 25894.6206768896. The cubic root of 670531380 is about 875.2652822847.

The spelling of 670531380 in words is "six hundred seventy million, five hundred thirty-one thousand, three hundred eighty".