54688689 has 20 divisors (see below), whose sum is σ = 89123760. Its totient is φ = 33144120.

The previous prime is 54688661. The next prime is 54688691. The reversal of 54688689 is 98688645.

It is a happy number.

It is not a de Polignac number, because 54688689 - 2⁵ = 54688657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54688189) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29799 + ... + 31580.

It is an arithmetic number, because the mean of its divisors is an integer number (4456188).

Almost surely, 2^54688689 is an apocalyptic number.

It is an amenable number.

54688689 is a deficient number, since it is larger than the sum of its proper divisors (34435071).

54688689 is a wasteful number, since it uses less digits than its factorization.

54688689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61402 (or 61393 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 54688689 is about 7395.1801195103. The cubic root of 54688689 is about 379.5763723249.

The spelling of 54688689 in words is "fifty-four million, six hundred eighty-eight thousand, six hundred eighty-nine".