612723456 has 108 divisors (see below), whose sum is σ = 1791324808. Its totient is φ = 201388032.

The previous prime is 612723451. The next prime is 612723487. The reversal of 612723456 is 654327216.

612723456 is a `hidden beast` number, since 612 + 7 + 2 + 34 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 612723456.

It is not an unprimeable number, because it can be changed into a prime (612723451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166371 + ... + 170013.

Almost surely, 2^612723456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612723456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895662404).

612723456 is an abundant number, since it is smaller than the sum of its proper divisors (1178601352).

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

612723456 is a wasteful number, since it uses less digits than its factorization.

612723456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738 (or 3721 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 612723456 is about 24753.2514227929. The cubic root of 612723456 is about 849.3528897135.

The spelling of 612723456 in words is "six hundred twelve million, seven hundred twenty-three thousand, four hundred fifty-six".