56743729 has 8 divisors (see below), whose sum is σ = 64944320. Its totient is φ = 48566736.

The previous prime is 56743721. The next prime is 56743759. The reversal of 56743729 is 92734765.

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 56743729 - 2³ = 56743721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56743721) 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, 399 + ... + 10660.

It is an arithmetic number, because the mean of its divisors is an integer number (8118040).

Almost surely, 2^56743729 is an apocalyptic number.

It is an amenable number.

56743729 is a deficient number, since it is larger than the sum of its proper divisors (8200591).

56743729 is a wasteful number, since it uses less digits than its factorization.

56743729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11799.

The product of its digits is 317520, while the sum is 43.

The square root of 56743729 is about 7532.8433542720. The cubic root of 56743729 is about 384.2724868093.

The spelling of 56743729 in words is "fifty-six million, seven hundred forty-three thousand, seven hundred twenty-nine".