56687029 has 16 divisors (see below), whose sum is σ = 67719168. Its totient is φ = 46437552.

The previous prime is 56687021. The next prime is 56687047. The reversal of 56687029 is 92078665.

It is not a de Polignac number, because 56687029 - 2³ = 56687021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56687021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12144 + ... + 16150.

It is an arithmetic number, because the mean of its divisors is an integer number (4232448).

Almost surely, 2^56687029 is an apocalyptic number.

It is an amenable number.

56687029 is a deficient number, since it is larger than the sum of its proper divisors (11032139).

56687029 is a wasteful number, since it uses less digits than its factorization.

56687029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 56687029 is about 7529.0788945262. The cubic root of 56687029 is about 384.1444520375.

The spelling of 56687029 in words is "fifty-six million, six hundred eighty-seven thousand, twenty-nine".