245390671 has 2 divisors, whose sum is σ = 245390672. Its totient is φ = 245390670.

The previous prime is 245390659. The next prime is 245390693. The reversal of 245390671 is 176093542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245390671 - 2¹³ = 245382479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245390671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245390071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122695335 + 122695336.

It is an arithmetic number, because the mean of its divisors is an integer number (122695336).

Almost surely, 2^245390671 is an apocalyptic number.

245390671 is a deficient number, since it is larger than the sum of its proper divisors (1).

245390671 is an equidigital number, since it uses as much as digits as its factorization.

245390671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 245390671 is about 15664.9503989001. The cubic root of 245390671 is about 626.0648905027.

The spelling of 245390671 in words is "two hundred forty-five million, three hundred ninety thousand, six hundred seventy-one".