677769431 has 2 divisors, whose sum is σ = 677769432. Its totient is φ = 677769430.

The previous prime is 677769427. The next prime is 677769437. The reversal of 677769431 is 134967776.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 677769431 - 2² = 677769427 is a prime.

It is a super-2 number, since 2×677769431² = 918742803196127522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 677769431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677769437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338884715 + 338884716.

It is an arithmetic number, because the mean of its divisors is an integer number (338884716).

Almost surely, 2^677769431 is an apocalyptic number.

677769431 is a deficient number, since it is larger than the sum of its proper divisors (1).

677769431 is an equidigital number, since it uses as much as digits as its factorization.

677769431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1333584, while the sum is 50.

The square root of 677769431 is about 26034.0052815544. The cubic root of 677769431 is about 878.4033682400.

The spelling of 677769431 in words is "six hundred seventy-seven million, seven hundred sixty-nine thousand, four hundred thirty-one".