612977855 has 16 divisors (see below), whose sum is σ = 848517120. Its totient is φ = 416396832.

The previous prime is 612977851. The next prime is 612977863. The reversal of 612977855 is 558779216.

612977855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 612977855 - 2² = 612977851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612977851) 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, 78095 + ... + 85584.

It is an arithmetic number, because the mean of its divisors is an integer number (53032320).

Almost surely, 2^612977855 is an apocalyptic number.

612977855 is a deficient number, since it is larger than the sum of its proper divisors (235539265).

612977855 is a wasteful number, since it uses less digits than its factorization.

612977855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163798.

The product of its digits is 1058400, while the sum is 50.

The square root of 612977855 is about 24758.3895881780. The cubic root of 612977855 is about 849.4704221426.

The spelling of 612977855 in words is "six hundred twelve million, nine hundred seventy-seven thousand, eight hundred fifty-five".