677553491 has 2 divisors, whose sum is σ = 677553492. Its totient is φ = 677553490.

The previous prime is 677553473. The next prime is 677553523. The reversal of 677553491 is 194355776.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 677553491 - 2²² = 673359187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (677553791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338776745 + 338776746.

It is an arithmetic number, because the mean of its divisors is an integer number (338776746).

Almost surely, 2^677553491 is an apocalyptic number.

677553491 is a deficient number, since it is larger than the sum of its proper divisors (1).

677553491 is an equidigital number, since it uses as much as digits as its factorization.

677553491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793800, while the sum is 47.

The square root of 677553491 is about 26029.8576830531. The cubic root of 677553491 is about 878.3100707444.

The spelling of 677553491 in words is "six hundred seventy-seven million, five hundred fifty-three thousand, four hundred ninety-one".