612045668 has 36 divisors (see below), whose sum is σ = 1162353780. Its totient is φ = 281863296.

The previous prime is 612045659. The next prime is 612045683. The reversal of 612045668 is 866540216.

It can be written as a sum of positive squares in 6 ways, for example, as 149279524 + 462766144 = 12218^2 + 21512^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 478646 + ... + 479922.

It is an arithmetic number, because the mean of its divisors is an integer number (32287605).

Almost surely, 2^612045668 is an apocalyptic number.

It is an amenable number.

612045668 is a deficient number, since it is larger than the sum of its proper divisors (550308112).

612045668 is a wasteful number, since it uses less digits than its factorization.

612045668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2016 (or 2001 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 612045668 is about 24739.5567462313. The cubic root of 612045668 is about 849.0395925308.

The spelling of 612045668 in words is "six hundred twelve million, forty-five thousand, six hundred sixty-eight".