615794797 has 2 divisors, whose sum is σ = 615794798. Its totient is φ = 615794796.

The previous prime is 615794771. The next prime is 615794813. The reversal of 615794797 is 797497516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333756361 + 282038436 = 18269^2 + 16794^2 .

It is a cyclic number.

It is not a de Polignac number, because 615794797 - 2²⁷ = 481577069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (615791797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307897398 + 307897399.

It is an arithmetic number, because the mean of its divisors is an integer number (307897399).

Almost surely, 2^615794797 is an apocalyptic number.

It is an amenable number.

615794797 is a deficient number, since it is larger than the sum of its proper divisors (1).

615794797 is an equidigital number, since it uses as much as digits as its factorization.

615794797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3333960, while the sum is 55.

The square root of 615794797 is about 24815.2130154065. The cubic root of 615794797 is about 850.7696820749.

The spelling of 615794797 in words is "six hundred fifteen million, seven hundred ninety-four thousand, seven hundred ninety-seven".