612648685 has 16 divisors (see below), whose sum is σ = 806827392. Its totient is φ = 442888000.

The previous prime is 612648671. The next prime is 612648721. The reversal of 612648685 is 586846216.

It is not a de Polignac number, because 612648685 - 2⁵ = 612648653 is a prime.

It is a super-2 number, since 2×612648685² = 750676822464458450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24166 + ... + 42535.

It is an arithmetic number, because the mean of its divisors is an integer number (50426712).

Almost surely, 2^612648685 is an apocalyptic number.

It is an amenable number.

612648685 is a deficient number, since it is larger than the sum of its proper divisors (194178707).

612648685 is a wasteful number, since it uses less digits than its factorization.

612648685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66884.

The product of its digits is 552960, while the sum is 46.

The square root of 612648685 is about 24751.7410498736. The cubic root of 612648685 is about 849.3183392989.

The spelling of 612648685 in words is "six hundred twelve million, six hundred forty-eight thousand, six hundred eighty-five".