613215306 has 32 divisors (see below), whose sum is σ = 1486584000. Its totient is φ = 185822640.

The previous prime is 613215269. The next prime is 613215377. The reversal of 613215306 is 603512316.

613215306 is a `hidden beast` number, since 613 + 2 + 15 + 30 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 613215306.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 515581 + ... + 516768.

It is an arithmetic number, because the mean of its divisors is an integer number (46455750).

Almost surely, 2^613215306 is an apocalyptic number.

613215306 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

613215306 is an abundant number, since it is smaller than the sum of its proper divisors (873368694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613215306 is a wasteful number, since it uses less digits than its factorization.

613215306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032371 (or 1032365 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 613215306 is about 24763.1844882681. The cubic root of 613215306 is about 849.5800952517.

The spelling of 613215306 in words is "six hundred thirteen million, two hundred fifteen thousand, three hundred six".