616564733 has 2 divisors, whose sum is σ = 616564734. Its totient is φ = 616564732.

The previous prime is 616564727. The next prime is 616564757. The reversal of 616564733 is 337465616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600348004 + 16216729 = 24502^2 + 4027^2 .

It is a cyclic number.

It is not a de Polignac number, because 616564733 - 2¹⁴ = 616548349 is a prime.

It is a super-2 number, since 2×616564733² = 760304139958722578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616564133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308282366 + 308282367.

It is an arithmetic number, because the mean of its divisors is an integer number (308282367).

Almost surely, 2^616564733 is an apocalyptic number.

It is an amenable number.

616564733 is a deficient number, since it is larger than the sum of its proper divisors (1).

616564733 is an equidigital number, since it uses as much as digits as its factorization.

616564733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 41.

The square root of 616564733 is about 24830.7215561691. The cubic root of 616564733 is about 851.1241104211.

The spelling of 616564733 in words is "six hundred sixteen million, five hundred sixty-four thousand, seven hundred thirty-three".