616309947 has 12 divisors (see below), whose sum is σ = 971155224. Its totient is φ = 373521120.

The previous prime is 616309933. The next prime is 616309951. The reversal of 616309947 is 749903616.

616309947 is a `hidden beast` number, since 6 + 1 + 630 + 9 + 9 + 4 + 7 = 666.

616309947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 616309947 - 2⁷ = 616309819 is a prime.

It is a super-2 number, since 2×616309947² = 759675901542285618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (616309957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3112578 + ... + 3112775.

It is an arithmetic number, because the mean of its divisors is an integer number (80929602).

Almost surely, 2^616309947 is an apocalyptic number.

616309947 is a deficient number, since it is larger than the sum of its proper divisors (354845277).

616309947 is a wasteful number, since it uses less digits than its factorization.

616309947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6225370 (or 6225367 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 616309947 is about 24825.5905669936. The cubic root of 616309947 is about 851.0068562365.

The spelling of 616309947 in words is "six hundred sixteen million, three hundred nine thousand, nine hundred forty-seven".