76781423 has 8 divisors (see below), whose sum is σ = 77642880. Its totient is φ = 75925080.

The previous prime is 76781407. The next prime is 76781437. The reversal of 76781423 is 32418767.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76781423 - 2⁴ = 76781407 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 (76781923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34148 + ... + 36326.

It is an arithmetic number, because the mean of its divisors is an integer number (9705360).

Almost surely, 2^76781423 is an apocalyptic number.

76781423 is a deficient number, since it is larger than the sum of its proper divisors (861457).

76781423 is a wasteful number, since it uses less digits than its factorization.

76781423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557.

The product of its digits is 56448, while the sum is 38.

The square root of 76781423 is about 8762.5009557774. The cubic root of 76781423 is about 425.0291523255.

The spelling of 76781423 in words is "seventy-six million, seven hundred eighty-one thousand, four hundred twenty-three".