76440771 has 24 divisors (see below), whose sum is σ = 121535856. Its totient is φ = 45911040.

The previous prime is 76440757. The next prime is 76440797. The reversal of 76440771 is 17704467.

76440771 is a `hidden beast` number, since 7 + 644 + 0 + 7 + 7 + 1 = 666.

It is not a de Polignac number, because 76440771 - 2¹⁰ = 76439747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76440701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7771 + ... + 14603.

It is an arithmetic number, because the mean of its divisors is an integer number (5063994).

Almost surely, 2^76440771 is an apocalyptic number.

76440771 is a deficient number, since it is larger than the sum of its proper divisors (45095085).

76440771 is a wasteful number, since it uses less digits than its factorization.

76440771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963 (or 6960 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 76440771 is about 8743.0412900775. The cubic root of 76440771 is about 424.3996524743.

The spelling of 76440771 in words is "seventy-six million, four hundred forty thousand, seven hundred seventy-one".