245997967 has 2 divisors, whose sum is σ = 245997968. Its totient is φ = 245997966.

The previous prime is 245997943. The next prime is 245997971. The reversal of 245997967 is 769799542.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245997967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245997907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122998983 + 122998984.

It is an arithmetic number, because the mean of its divisors is an integer number (122998984).

Almost surely, 2^245997967 is an apocalyptic number.

245997967 is a deficient number, since it is larger than the sum of its proper divisors (1).

245997967 is an equidigital number, since it uses as much as digits as its factorization.

245997967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8573040, while the sum is 58.

The square root of 245997967 is about 15684.3223315513. The cubic root of 245997967 is about 626.5809295272.

The spelling of 245997967 in words is "two hundred forty-five million, nine hundred ninety-seven thousand, nine hundred sixty-seven".