677146469 has 2 divisors, whose sum is σ = 677146470. Its totient is φ = 677146468.

The previous prime is 677146441. The next prime is 677146471. The reversal of 677146469 is 964641776.

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., 578402500 + 98743969 = 24050^2 + 9937^2 .

It is a cyclic number.

It is not a de Polignac number, because 677146469 - 2¹⁶ = 677080933 is a prime.

It is a super-2 number, since 2×677146469² = 917054680958335922, which contains 22 as substring.

Together with 677146471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (677146369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338573234 + 338573235.

It is an arithmetic number, because the mean of its divisors is an integer number (338573235).

Almost surely, 2^677146469 is an apocalyptic number.

It is an amenable number.

677146469 is a deficient number, since it is larger than the sum of its proper divisors (1).

677146469 is an equidigital number, since it uses as much as digits as its factorization.

677146469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 50.

The square root of 677146469 is about 26022.0381407760. The cubic root of 677146469 is about 878.1341618139.

The spelling of 677146469 in words is "six hundred seventy-seven million, one hundred forty-six thousand, four hundred sixty-nine".