77000669 has 2 divisors, whose sum is σ = 77000670. Its totient is φ = 77000668.

The previous prime is 77000653. The next prime is 77000699. The reversal of 77000669 is 96600077.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76352644 + 648025 = 8738^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 77000669 - 2⁴ = 77000653 is a prime.

It is a super-2 number, since 2×77000669² = 11858206052895122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77000629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38500334 + 38500335.

It is an arithmetic number, because the mean of its divisors is an integer number (38500335).

Almost surely, 2^77000669 is an apocalyptic number.

It is an amenable number.

77000669 is a deficient number, since it is larger than the sum of its proper divisors (1).

77000669 is an equidigital number, since it uses as much as digits as its factorization.

77000669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 77000669 is about 8775.0025071221. The cubic root of 77000669 is about 425.4333186035.

The spelling of 77000669 in words is "seventy-seven million, six hundred sixty-nine", and thus it is an aban number.