76449761 has 8 divisors (see below), whose sum is σ = 77973504. Its totient is φ = 74939040.

The previous prime is 76449739. The next prime is 76449767. The reversal of 76449761 is 16794467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76449761 - 2²⁶ = 9340897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76449767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9056 + ... + 15326.

It is an arithmetic number, because the mean of its divisors is an integer number (9746688).

Almost surely, 2^76449761 is an apocalyptic number.

It is an amenable number.

76449761 is a deficient number, since it is larger than the sum of its proper divisors (1523743).

76449761 is a wasteful number, since it uses less digits than its factorization.

76449761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6511.

The product of its digits is 254016, while the sum is 44.

The square root of 76449761 is about 8743.5553981204. Note that the first 3 decimals coincide. The cubic root of 76449761 is about 424.4162893347.

The spelling of 76449761 in words is "seventy-six million, four hundred forty-nine thousand, seven hundred sixty-one".