245690671 has 2 divisors, whose sum is σ = 245690672. Its totient is φ = 245690670.

The previous prime is 245690633. The next prime is 245690677. The reversal of 245690671 is 176096542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245690671 - 2¹¹ = 245688623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245690677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122845335 + 122845336.

It is an arithmetic number, because the mean of its divisors is an integer number (122845336).

Almost surely, 2^245690671 is an apocalyptic number.

245690671 is a deficient number, since it is larger than the sum of its proper divisors (1).

245690671 is an equidigital number, since it uses as much as digits as its factorization.

245690671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 245690671 is about 15674.5229911471. The cubic root of 245690671 is about 626.3199164706.

The spelling of 245690671 in words is "two hundred forty-five million, six hundred ninety thousand, six hundred seventy-one".