616452731 has 2 divisors, whose sum is σ = 616452732. Its totient is φ = 616452730.

The previous prime is 616452679. The next prime is 616452769. The reversal of 616452731 is 137254616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 616452731 - 2⁶ = 616452667 is a prime.

It is a super-2 number, since 2×616452731² = 760027939114716722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 616452691 and 616452700.

It is not a weakly prime, because it can be changed into another prime (616452791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308226365 + 308226366.

It is an arithmetic number, because the mean of its divisors is an integer number (308226366).

Almost surely, 2^616452731 is an apocalyptic number.

616452731 is a deficient number, since it is larger than the sum of its proper divisors (1).

616452731 is an equidigital number, since it uses as much as digits as its factorization.

616452731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 616452731 is about 24828.4661427161. The cubic root of 616452731 is about 851.0725703473.

The spelling of 616452731 in words is "six hundred sixteen million, four hundred fifty-two thousand, seven hundred thirty-one".