677747453 has 2 divisors, whose sum is σ = 677747454. Its totient is φ = 677747452.

The previous prime is 677747419. The next prime is 677747479. The reversal of 677747453 is 354747776.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427538329 + 250209124 = 20677^2 + 15818^2 .

It is a cyclic number.

It is not a de Polignac number, because 677747453 - 2²² = 673553149 is a prime.

It is a super-2 number, since 2×677747453² = 918683220095974418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677747153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338873726 + 338873727.

It is an arithmetic number, because the mean of its divisors is an integer number (338873727).

Almost surely, 2^677747453 is an apocalyptic number.

It is an amenable number.

677747453 is a deficient number, since it is larger than the sum of its proper divisors (1).

677747453 is an equidigital number, since it uses as much as digits as its factorization.

677747453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3457440, while the sum is 50.

The square root of 677747453 is about 26033.5831763513. The cubic root of 677747453 is about 878.3938734880.

The spelling of 677747453 in words is "six hundred seventy-seven million, seven hundred forty-seven thousand, four hundred fifty-three".