677900969 has 2 divisors, whose sum is σ = 677900970. Its totient is φ = 677900968.

The previous prime is 677900957. The next prime is 677901001. The reversal of 677900969 is 969009776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368140969 + 309760000 = 19187^2 + 17600^2 .

It is a cyclic number.

It is not a de Polignac number, because 677900969 - 2⁴ = 677900953 is a prime.

It is a super-2 number, since 2×677900969² = 919099447542277922, 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 677900969.

It is not a weakly prime, because it can be changed into another prime (677900669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338950484 + 338950485.

It is an arithmetic number, because the mean of its divisors is an integer number (338950485).

Almost surely, 2^677900969 is an apocalyptic number.

It is an amenable number.

677900969 is a deficient number, since it is larger than the sum of its proper divisors (1).

677900969 is an equidigital number, since it uses as much as digits as its factorization.

677900969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1285956, while the sum is 53.

The square root of 677900969 is about 26036.5314318171. The cubic root of 677900969 is about 878.4601898979.

The spelling of 677900969 in words is "six hundred seventy-seven million, nine hundred thousand, nine hundred sixty-nine".