76747121 has 16 divisors (see below), whose sum is σ = 86184000. Its totient is φ = 67737600.

The previous prime is 76747117. The next prime is 76747133. The reversal of 76747121 is 12174767.

It is a cyclic number.

It is not a de Polignac number, because 76747121 - 2² = 76747117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76747621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170705 + ... + 171153.

It is an arithmetic number, because the mean of its divisors is an integer number (5386500).

Almost surely, 2^76747121 is an apocalyptic number.

It is an amenable number.

76747121 is a deficient number, since it is larger than the sum of its proper divisors (9436879).

76747121 is a wasteful number, since it uses less digits than its factorization.

76747121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880.

The product of its digits is 16464, while the sum is 35.

The square root of 76747121 is about 8760.5434192178. The cubic root of 76747121 is about 424.9658491590.

The spelling of 76747121 in words is "seventy-six million, seven hundred forty-seven thousand, one hundred twenty-one".