612139563 has 12 divisors (see below), whose sum is σ = 1010516208. Its totient is φ = 349794000.

The previous prime is 612139523. The next prime is 612139571. The reversal of 612139563 is 365931216.

612139563 is a `hidden beast` number, since 61 + 2 + 1 + 39 + 563 = 666.

It is not a de Polignac number, because 612139563 - 2¹⁰ = 612138539 is a prime.

It is a super-3 number, since 3×612139563³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (612139523) 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 11 ways as a sum of consecutive naturals, for example, 4858188 + ... + 4858313.

It is an arithmetic number, because the mean of its divisors is an integer number (84209684).

Almost surely, 2^612139563 is an apocalyptic number.

612139563 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

612139563 is a deficient number, since it is larger than the sum of its proper divisors (398376645).

612139563 is a wasteful number, since it uses less digits than its factorization.

612139563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9716514 (or 9716511 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 612139563 is about 24741.4543428635. The cubic root of 612139563 is about 849.0830078620.

The spelling of 612139563 in words is "six hundred twelve million, one hundred thirty-nine thousand, five hundred sixty-three".