677072569 has 2 divisors, whose sum is σ = 677072570. Its totient is φ = 677072568.

The previous prime is 677072563. The next prime is 677072579. The reversal of 677072569 is 965270776.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546998544 + 130074025 = 23388^2 + 11405^2 .

It is a cyclic number.

It is not a de Polignac number, because 677072569 - 2¹¹ = 677070521 is a prime.

It is a super-2 number, since 2×677072569² = 916854527384519522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (677072563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338536284 + 338536285.

It is an arithmetic number, because the mean of its divisors is an integer number (338536285).

Almost surely, 2^677072569 is an apocalyptic number.

It is an amenable number.

677072569 is a deficient number, since it is larger than the sum of its proper divisors (1).

677072569 is an equidigital number, since it uses as much as digits as its factorization.

677072569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1111320, while the sum is 49.

The square root of 677072569 is about 26020.6181517657. The cubic root of 677072569 is about 878.1022157587.

The spelling of 677072569 in words is "six hundred seventy-seven million, seventy-two thousand, five hundred sixty-nine".