56423687 has 4 divisors (see below), whose sum is σ = 56868096. Its totient is φ = 55979280.

The previous prime is 56423677. The next prime is 56423693. The reversal of 56423687 is 78632465.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56423687 - 2¹⁴ = 56407303 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 (56423677) 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, 222014 + ... + 222267.

It is an arithmetic number, because the mean of its divisors is an integer number (14217024).

Almost surely, 2^56423687 is an apocalyptic number.

56423687 is a deficient number, since it is larger than the sum of its proper divisors (444409).

56423687 is a wasteful number, since it uses less digits than its factorization.

56423687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444408.

The product of its digits is 241920, while the sum is 41.

The square root of 56423687 is about 7511.5702086847. The cubic root of 56423687 is about 383.5486753937.

The spelling of 56423687 in words is "fifty-six million, four hundred twenty-three thousand, six hundred eighty-seven".