77000665 has 32 divisors (see below), whose sum is σ = 112928256. Its totient is φ = 49251840.

The previous prime is 77000653. The next prime is 77000669. The reversal of 77000665 is 56600077.

It is not a de Polignac number, because 77000665 - 2¹⁹ = 76476377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77000669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31839 + ... + 34171.

It is an arithmetic number, because the mean of its divisors is an integer number (3529008).

Almost surely, 2^77000665 is an apocalyptic number.

It is an amenable number.

77000665 is a deficient number, since it is larger than the sum of its proper divisors (35927591).

77000665 is a wasteful number, since it uses less digits than its factorization.

77000665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 77000665 is about 8775.0022792020. The cubic root of 77000665 is about 425.4333112367.

The spelling of 77000665 in words is "seventy-seven million, six hundred sixty-five", and thus it is an aban number.