76405823 has 4 divisors (see below), whose sum is σ = 82283208. Its totient is φ = 70528440.

The previous prime is 76405817. The next prime is 76405829. The reversal of 76405823 is 32850467.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32850467 = 13 ⋅2526959.

It is an interprime number because it is at equal distance from previous prime (76405817) and next prime (76405829).

It is a cyclic number.

It is not a de Polignac number, because 76405823 - 2⁶ = 76405759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76405829) 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, 2938673 + ... + 2938698.

It is an arithmetic number, because the mean of its divisors is an integer number (20570802).

Almost surely, 2^76405823 is an apocalyptic number.

76405823 is a deficient number, since it is larger than the sum of its proper divisors (5877385).

76405823 is a wasteful number, since it uses less digits than its factorization.

76405823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5877384.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 76405823 is about 8741.0424435533. The cubic root of 76405823 is about 424.3349654416.

The spelling of 76405823 in words is "seventy-six million, four hundred five thousand, eight hundred twenty-three".