612264861 has 18 divisors (see below), whose sum is σ = 957647418. Its totient is φ = 376777440.

The previous prime is 612264859. The next prime is 612264893. The reversal of 612264861 is 168462216.

612264861 is a `hidden beast` number, since 6 + 1 + 2 + 2 + 648 + 6 + 1 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 21483225 + 590781636 = 4635^2 + 24306^2 .

It is not a de Polignac number, because 612264861 - 2¹ = 612264859 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612264811) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 199750 + ... + 202791.

Almost surely, 2^612264861 is an apocalyptic number.

It is an amenable number.

612264861 is a deficient number, since it is larger than the sum of its proper divisors (345382557).

612264861 is a wasteful number, since it uses less digits than its factorization.

612264861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402573 (or 402557 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 612264861 is about 24743.9863603260. The cubic root of 612264861 is about 849.1409364517.

The spelling of 612264861 in words is "six hundred twelve million, two hundred sixty-four thousand, eight hundred sixty-one".