76004321 has 4 divisors (see below), whose sum is σ = 76141332. Its totient is φ = 75867312.

The previous prime is 76004317. The next prime is 76004323. The reversal of 76004321 is 12340067.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12340067 = 433 ⋅28499.

It can be written as a sum of positive squares in 2 ways, for example, as 40768225 + 35236096 = 6385^2 + 5936^2 .

It is a cyclic number.

It is not a de Polignac number, because 76004321 - 2² = 76004317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76004323) 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, 67670 + ... + 68783.

It is an arithmetic number, because the mean of its divisors is an integer number (19035333).

Almost surely, 2^76004321 is an apocalyptic number.

It is an amenable number.

76004321 is a deficient number, since it is larger than the sum of its proper divisors (137011).

76004321 is a wasteful number, since it uses less digits than its factorization.

76004321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137010.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 76004321 is about 8718.0457099054. The cubic root of 76004321 is about 423.5903859022.

Adding to 76004321 its reverse (12340067), we get a palindrome (88344388).

The spelling of 76004321 in words is "seventy-six million, four thousand, three hundred twenty-one".