612311608 has 16 divisors (see below), whose sum is σ = 1151218080. Its totient is φ = 305320128.

The previous prime is 612311599. The next prime is 612311621. The reversal of 612311608 is 806113216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101341 + ... + 107212.

It is an arithmetic number, because the mean of its divisors is an integer number (71951130).

Almost surely, 2^612311608 is an apocalyptic number.

It is an amenable number.

612311608 is a deficient number, since it is larger than the sum of its proper divisors (538906472).

612311608 is a wasteful number, since it uses less digits than its factorization.

612311608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208926 (or 208922 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 612311608 is about 24744.9309556523. The cubic root of 612311608 is about 849.1625468057.

The spelling of 612311608 in words is "six hundred twelve million, three hundred eleven thousand, six hundred eight".