76405863 has 4 divisors (see below), whose sum is σ = 101874488. Its totient is φ = 50937240.

The previous prime is 76405841. The next prime is 76405873. The reversal of 76405863 is 36850467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36850467 = 3 ⋅12283489.

It is not a de Polignac number, because 76405863 - 2⁵ = 76405831 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 (76405873) 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, 12734308 + ... + 12734313.

It is an arithmetic number, because the mean of its divisors is an integer number (25468622).

Almost surely, 2^76405863 is an apocalyptic number.

76405863 is a deficient number, since it is larger than the sum of its proper divisors (25468625).

76405863 is a wasteful number, since it uses less digits than its factorization.

76405863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25468624.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 76405863 is about 8741.0447316096. The cubic root of 76405863 is about 424.3350394909.

The spelling of 76405863 in words is "seventy-six million, four hundred five thousand, eight hundred sixty-three".