245690677 has 2 divisors, whose sum is σ = 245690678. Its totient is φ = 245690676.

The previous prime is 245690671. The next prime is 245690689. The reversal of 245690677 is 776096542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237129201 + 8561476 = 15399^2 + 2926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245690677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245690671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122845338 + 122845339.

It is an arithmetic number, because the mean of its divisors is an integer number (122845339).

Almost surely, 2^245690677 is an apocalyptic number.

It is an amenable number.

245690677 is a deficient number, since it is larger than the sum of its proper divisors (1).

245690677 is an equidigital number, since it uses as much as digits as its factorization.

245690677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 245690677 is about 15674.5231825405. The cubic root of 245690677 is about 626.3199215690.

The spelling of 245690677 in words is "two hundred forty-five million, six hundred ninety thousand, six hundred seventy-seven".