612745705740 has 96 divisors (see below), whose sum is σ = 1963337080320. Its totient is φ = 139873959936.

The previous prime is 612745705739. The next prime is 612745705751. The reversal of 612745705740 is 47507547216.

It is a self number, because there is not a number n which added to its sum of digits gives 612745705740.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 625602 + ... + 1271561.

It is an arithmetic number, because the mean of its divisors is an integer number (20451427920).

Almost surely, 2^612745705740 is an apocalyptic number.

612745705740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

612745705740 is an abundant number, since it is smaller than the sum of its proper divisors (1350591374580).

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

612745705740 is a wasteful number, since it uses less digits than its factorization.

612745705740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897951 (or 1897949 counting only the distinct ones).

The product of its (nonzero) digits is 1646400, while the sum is 48.

The spelling of 612745705740 in words is "six hundred twelve billion, seven hundred forty-five million, seven hundred five thousand, seven hundred forty".