56390689 has 8 divisors (see below), whose sum is σ = 59760000. Its totient is φ = 53061552.

The previous prime is 56390639. The next prime is 56390699. The reversal of 56390689 is 98609365.

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 56390689 - 2¹⁷ = 56259617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56390629) 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, 7129 + ... + 12790.

It is an arithmetic number, because the mean of its divisors is an integer number (7470000).

Almost surely, 2^56390689 is an apocalyptic number.

It is an amenable number.

56390689 is a deficient number, since it is larger than the sum of its proper divisors (3369311).

56390689 is a wasteful number, since it uses less digits than its factorization.

56390689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20087.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 56390689 is about 7509.3734092799. The cubic root of 56390689 is about 383.4738911561.

The spelling of 56390689 in words is "fifty-six million, three hundred ninety thousand, six hundred eighty-nine".