612456321 has 8 divisors (see below), whose sum is σ = 818233920. Its totient is φ = 407491472.

The previous prime is 612456289. The next prime is 612456329. The reversal of 612456321 is 123654216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 612456321 - 2⁵ = 612456289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612456329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201426 + ... + 204443.

It is an arithmetic number, because the mean of its divisors is an integer number (102279240).

Almost surely, 2^612456321 is an apocalyptic number.

It is an amenable number.

612456321 is a deficient number, since it is larger than the sum of its proper divisors (205777599).

612456321 is a wasteful number, since it uses less digits than its factorization.

612456321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406375.

The product of its digits is 8640, while the sum is 30.

The square root of 612456321 is about 24747.8548767363. The cubic root of 612456321 is about 849.2294382264.

The spelling of 612456321 in words is "six hundred twelve million, four hundred fifty-six thousand, three hundred twenty-one".