612328457 has 16 divisors (see below), whose sum is σ = 701002512. Its totient is φ = 529858560.

The previous prime is 612328403. The next prime is 612328459. The reversal of 612328457 is 754823216.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 18139081 + 594189376 = 4259^2 + 24376^2 .

It is a cyclic number.

It is not a de Polignac number, because 612328457 - 2⁶ = 612328393 is a prime.

It is a super-2 number, since 2×612328457² = 749892278504001698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 612328457.

It is not an unprimeable number, because it can be changed into a prime (612328459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51407 + ... + 62187.

It is an arithmetic number, because the mean of its divisors is an integer number (43812657).

Almost surely, 2^612328457 is an apocalyptic number.

It is an amenable number.

612328457 is a deficient number, since it is larger than the sum of its proper divisors (88674055).

612328457 is a wasteful number, since it uses less digits than its factorization.

612328457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11068.

The product of its digits is 80640, while the sum is 38.

The square root of 612328457 is about 24745.2714068769. The cubic root of 612328457 is about 849.1703355461.

It can be divided in two parts, 612 and 328457, that multiplied together give a square (201015684 = 14178²).

The spelling of 612328457 in words is "six hundred twelve million, three hundred twenty-eight thousand, four hundred fifty-seven".