612056405 has 64 divisors (see below), whose sum is σ = 845752320. Its totient is φ = 423014400.

The previous prime is 612056399. The next prime is 612056407. The reversal of 612056405 is 504650216.

It is not a de Polignac number, because 612056405 - 2⁸ = 612056149 is a prime.

It is a super-2 number, since 2×612056405² = 749226085803048050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612056407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4467497 + ... + 4467633.

It is an arithmetic number, because the mean of its divisors is an integer number (13214880).

Almost surely, 2^612056405 is an apocalyptic number.

It is an amenable number.

612056405 is a deficient number, since it is larger than the sum of its proper divisors (233695915).

612056405 is a wasteful number, since it uses less digits than its factorization.

612056405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 612056405 is about 24739.7737459339. The cubic root of 612056405 is about 849.0445573481.

The spelling of 612056405 in words is "six hundred twelve million, fifty-six thousand, four hundred five".