76814971 has 4 divisors (see below), whose sum is σ = 77896944. Its totient is φ = 75733000.

The previous prime is 76814957. The next prime is 76814981. The reversal of 76814971 is 17941867.

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 76814971 - 2⁹ = 76814459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76814911) 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 3 ways as a sum of consecutive naturals, for example, 540880 + ... + 541021.

It is an arithmetic number, because the mean of its divisors is an integer number (19474236).

Almost surely, 2^76814971 is an apocalyptic number.

76814971 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

76814971 is a deficient number, since it is larger than the sum of its proper divisors (1081973).

76814971 is a wasteful number, since it uses less digits than its factorization.

76814971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081972.

The product of its digits is 84672, while the sum is 43.

The square root of 76814971 is about 8764.4150403778. The cubic root of 76814971 is about 425.0910457769.

The spelling of 76814971 in words is "seventy-six million, eight hundred fourteen thousand, nine hundred seventy-one".