612438712 has 8 divisors (see below), whose sum is σ = 1148322600. Its totient is φ = 306219352.

The previous prime is 612438709. The next prime is 612438713. The reversal of 612438712 is 217834216.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612438713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38277412 + ... + 38277427.

It is an arithmetic number, because the mean of its divisors is an integer number (143540325).

Almost surely, 2^612438712 is an apocalyptic number.

It is an amenable number.

612438712 is a deficient number, since it is larger than the sum of its proper divisors (535883888).

612438712 is a wasteful number, since it uses less digits than its factorization.

612438712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76554845 (or 76554841 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 612438712 is about 24747.4991059703. The cubic root of 612438712 is about 849.2212992925.

The spelling of 612438712 in words is "six hundred twelve million, four hundred thirty-eight thousand, seven hundred twelve".