245677477 has 2 divisors, whose sum is σ = 245677478. Its totient is φ = 245677476.

The previous prime is 245677441. The next prime is 245677493. The reversal of 245677477 is 774776542.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184117761 + 61559716 = 13569^2 + 7846^2 .

It is a cyclic number.

It is not a de Polignac number, because 245677477 - 2¹⁵ = 245644709 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245677477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245677577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122838738 + 122838739.

It is an arithmetic number, because the mean of its divisors is an integer number (122838739).

Almost surely, 2^245677477 is an apocalyptic number.

It is an amenable number.

245677477 is a deficient number, since it is larger than the sum of its proper divisors (1).

245677477 is an equidigital number, since it uses as much as digits as its factorization.

245677477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304960, while the sum is 49.

The square root of 245677477 is about 15674.1021114449. The cubic root of 245677477 is about 626.3087047941.

The spelling of 245677477 in words is "two hundred forty-five million, six hundred seventy-seven thousand, four hundred seventy-seven".