616496801 has 2 divisors, whose sum is σ = 616496802. Its totient is φ = 616496800.

The previous prime is 616496779. The next prime is 616496809. The reversal of 616496801 is 108694616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 547606801 + 68890000 = 23401^2 + 8300^2 .

It is a cyclic number.

It is not a de Polignac number, because 616496801 - 2²² = 612302497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (616496809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308248400 + 308248401.

It is an arithmetic number, because the mean of its divisors is an integer number (308248401).

Almost surely, 2^616496801 is an apocalyptic number.

It is an amenable number.

616496801 is a deficient number, since it is larger than the sum of its proper divisors (1).

616496801 is an equidigital number, since it uses as much as digits as its factorization.

616496801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 616496801 is about 24829.3536162342. The cubic root of 616496801 is about 851.0928508287.

The spelling of 616496801 in words is "six hundred sixteen million, four hundred ninety-six thousand, eight hundred one".