612012655 has 16 divisors (see below), whose sum is σ = 751354560. Its totient is φ = 478441728.

The previous prime is 612012649. The next prime is 612012659. The reversal of 612012655 is 556210216.

It is a cyclic number.

It is not a de Polignac number, because 612012655 - 2³ = 612012647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612012659) 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, 32094 + ... + 47476.

It is an arithmetic number, because the mean of its divisors is an integer number (46959660).

Almost surely, 2^612012655 is an apocalyptic number.

612012655 is a deficient number, since it is larger than the sum of its proper divisors (139341905).

612012655 is a wasteful number, since it uses less digits than its factorization.

612012655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15570.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 612012655 is about 24738.8895264116. The cubic root of 612012655 is about 849.0243268682.

The spelling of 612012655 in words is "six hundred twelve million, twelve thousand, six hundred fifty-five".