699125797 has 2 divisors, whose sum is σ = 699125798. Its totient is φ = 699125796.

The previous prime is 699125789. The next prime is 699125803. The reversal of 699125797 is 797521996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556299396 + 142826401 = 23586^2 + 11951^2 .

It is a cyclic number.

It is not a de Polignac number, because 699125797 - 2³ = 699125789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699125897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349562898 + 349562899.

It is an arithmetic number, because the mean of its divisors is an integer number (349562899).

Almost surely, 2^699125797 is an apocalyptic number.

It is an amenable number.

699125797 is a deficient number, since it is larger than the sum of its proper divisors (1).

699125797 is an equidigital number, since it uses as much as digits as its factorization.

699125797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2143260, while the sum is 55.

The square root of 699125797 is about 26440.9870655390. The cubic root of 699125797 is about 887.5342247464.

The spelling of 699125797 in words is "six hundred ninety-nine million, one hundred twenty-five thousand, seven hundred ninety-seven".