612461655 has 80 divisors (see below), whose sum is σ = 1202360544. Its totient is φ = 296421120.

The previous prime is 612461581. The next prime is 612461657. The reversal of 612461655 is 556164216.

It is not a de Polignac number, because 612461655 - 2¹⁰ = 612460631 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612461657) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 320212 + ... + 322118.

Almost surely, 2^612461655 is an apocalyptic number.

612461655 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

612461655 is a deficient number, since it is larger than the sum of its proper divisors (589898889).

612461655 is a wasteful number, since it uses less digits than its factorization.

612461655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998 (or 1989 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 612461655 is about 24747.9626434177. The cubic root of 612461655 is about 849.2319035868.

The spelling of 612461655 in words is "six hundred twelve million, four hundred sixty-one thousand, six hundred fifty-five".