612418668 has 12 divisors (see below), whose sum is σ = 1428976920. Its totient is φ = 204139552.

The previous prime is 612418661. The next prime is 612418669. The reversal of 612418668 is 866814216.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (612418661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25517433 + ... + 25517456.

It is an arithmetic number, because the mean of its divisors is an integer number (119081410).

Almost surely, 2^612418668 is an apocalyptic number.

It is an amenable number.

612418668 is an abundant number, since it is smaller than the sum of its proper divisors (816558252).

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

612418668 is a wasteful number, since it uses less digits than its factorization.

612418668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51034896 (or 51034894 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 612418668 is about 24747.0941324431. The cubic root of 612418668 is about 849.2120347043.

The spelling of 612418668 in words is "six hundred twelve million, four hundred eighteen thousand, six hundred sixty-eight".