617730797 has 2 divisors, whose sum is σ = 617730798. Its totient is φ = 617730796.

The previous prime is 617730791. The next prime is 617730811. The reversal of 617730797 is 797037716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614097961 + 3632836 = 24781^2 + 1906^2 .

It is a cyclic number.

It is not a de Polignac number, because 617730797 - 2¹⁸ = 617468653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (617730791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308865398 + 308865399.

It is an arithmetic number, because the mean of its divisors is an integer number (308865399).

Almost surely, 2^617730797 is an apocalyptic number.

It is an amenable number.

617730797 is a deficient number, since it is larger than the sum of its proper divisors (1).

617730797 is an equidigital number, since it uses as much as digits as its factorization.

617730797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388962, while the sum is 47.

The square root of 617730797 is about 24854.1907331540. The cubic root of 617730797 is about 851.6603288851.

The spelling of 617730797 in words is "six hundred seventeen million, seven hundred thirty thousand, seven hundred ninety-seven".