245307697 has 2 divisors, whose sum is σ = 245307698. Its totient is φ = 245307696.

The previous prime is 245307677. The next prime is 245307707. The reversal of 245307697 is 796703542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127780416 + 117527281 = 11304^2 + 10841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245307697 is a prime.

It is not a weakly prime, because it can be changed into another prime (245307677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122653848 + 122653849.

It is an arithmetic number, because the mean of its divisors is an integer number (122653849).

Almost surely, 2^245307697 is an apocalyptic number.

It is an amenable number.

245307697 is a deficient number, since it is larger than the sum of its proper divisors (1).

245307697 is an equidigital number, since it uses as much as digits as its factorization.

245307697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 245307697 is about 15662.3017784743. The cubic root of 245307697 is about 625.9943187296.

The spelling of 245307697 in words is "two hundred forty-five million, three hundred seven thousand, six hundred ninety-seven".