670345781340 has 48 divisors (see below), whose sum is σ = 1877537692800. Its totient is φ = 178704636480.

The previous prime is 670345781333. The next prime is 670345781431. The reversal of 670345781340 is 43187543076.

It is a self number, because there is not a number n which added to its sum of digits gives 670345781340.

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, 1495366 + ... + 1891245.

It is an arithmetic number, because the mean of its divisors is an integer number (39115368600).

Almost surely, 2^670345781340 is an apocalyptic number.

670345781340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

670345781340 is an abundant number, since it is smaller than the sum of its proper divisors (1207191911460).

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

670345781340 is a wasteful number, since it uses less digits than its factorization.

670345781340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389922 (or 3389920 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 670345781340 in words is "six hundred seventy billion, three hundred forty-five million, seven hundred eighty-one thousand, three hundred forty".