616711457 has 2 divisors, whose sum is σ = 616711458. Its totient is φ = 616711456.

The previous prime is 616711429. The next prime is 616711507. The reversal of 616711457 is 754117616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532732561 + 83978896 = 23081^2 + 9164^2 .

It is a cyclic number.

It is not a de Polignac number, because 616711457 - 2⁸ = 616711201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616711457.

It is not a weakly prime, because it can be changed into another prime (616701457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308355728 + 308355729.

It is an arithmetic number, because the mean of its divisors is an integer number (308355729).

Almost surely, 2^616711457 is an apocalyptic number.

It is an amenable number.

616711457 is a deficient number, since it is larger than the sum of its proper divisors (1).

616711457 is an equidigital number, since it uses as much as digits as its factorization.

616711457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 38.

The square root of 616711457 is about 24833.6758656466. The cubic root of 616711457 is about 851.1916191095.

The spelling of 616711457 in words is "six hundred sixteen million, seven hundred eleven thousand, four hundred fifty-seven".