76660749 has 40 divisors (see below), whose sum is σ = 126358848. Its totient is φ = 45930240.

The previous prime is 76660741. The next prime is 76660783. The reversal of 76660749 is 94706667.

It is not a de Polignac number, because 76660749 - 2³ = 76660741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76660741) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 85984 + ... + 86870.

Almost surely, 2^76660749 is an apocalyptic number.

It is an amenable number.

76660749 is a deficient number, since it is larger than the sum of its proper divisors (49698099).

76660749 is a wasteful number, since it uses less digits than its factorization.

76660749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 998 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 76660749 is about 8755.6124286083. The cubic root of 76660749 is about 424.8063690034.

The spelling of 76660749 in words is "seventy-six million, six hundred sixty thousand, seven hundred forty-nine".