612279361 has 8 divisors (see below), whose sum is σ = 651130920. Its totient is φ = 573742848.

The previous prime is 612279347. The next prime is 612279391. The reversal of 612279361 is 163972216.

It can be written as a sum of positive squares in 4 ways, for example, as 411887025 + 200392336 = 20295^2 + 14156^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 612279361 - 2⁵ = 612279329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 612279361.

It is not an unprimeable number, because it can be changed into a prime (612279301) 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 7 ways as a sum of consecutive naturals, for example, 74746 + ... + 82531.

It is an arithmetic number, because the mean of its divisors is an integer number (81391365).

Almost surely, 2^612279361 is an apocalyptic number.

It is an amenable number.

612279361 is a deficient number, since it is larger than the sum of its proper divisors (38851559).

612279361 is a wasteful number, since it uses less digits than its factorization.

612279361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157523.

The product of its digits is 27216, while the sum is 37.

The square root of 612279361 is about 24744.2793590761. The cubic root of 612279361 is about 849.1476396761.

The spelling of 612279361 in words is "six hundred twelve million, two hundred seventy-nine thousand, three hundred sixty-one".