76824971 has 4 divisors (see below), whose sum is σ = 77504952. Its totient is φ = 76144992.

The previous prime is 76824953. The next prime is 76824983. The reversal of 76824971 is 17942867.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76824971 - 2¹⁰ = 76823947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76824941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339821 + ... + 340046.

It is an arithmetic number, because the mean of its divisors is an integer number (19376238).

Almost surely, 2^76824971 is an apocalyptic number.

76824971 is a deficient number, since it is larger than the sum of its proper divisors (679981).

76824971 is a wasteful number, since it uses less digits than its factorization.

76824971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679980.

The product of its digits is 169344, while the sum is 44.

The square root of 76824971 is about 8764.9855105414. The cubic root of 76824971 is about 425.1094915128.

The spelling of 76824971 in words is "seventy-six million, eight hundred twenty-four thousand, nine hundred seventy-one".