76723409 has 4 divisors (see below), whose sum is σ = 87683904. Its totient is φ = 65762916.

The previous prime is 76723399. The next prime is 76723477. The reversal of 76723409 is 90432767.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76723409 - 2⁴ = 76723393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76722409) 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, 5480237 + ... + 5480250.

It is an arithmetic number, because the mean of its divisors is an integer number (21920976).

Almost surely, 2^76723409 is an apocalyptic number.

It is an amenable number.

76723409 is a deficient number, since it is larger than the sum of its proper divisors (10960495).

76723409 is a wasteful number, since it uses less digits than its factorization.

76723409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10960494.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 76723409 is about 8759.1899739645. The cubic root of 76723409 is about 424.9220784479.

The spelling of 76723409 in words is "seventy-six million, seven hundred twenty-three thousand, four hundred nine".