54666687 has 8 divisors (see below), whose sum is σ = 74439936. Its totient is φ = 35668952.

The previous prime is 54666659. The next prime is 54666701. The reversal of 54666687 is 78666645.

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 54666687 - 2¹² = 54662591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54666617) 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, 193713 + ... + 193994.

It is an arithmetic number, because the mean of its divisors is an integer number (9304992).

Almost surely, 2^54666687 is an apocalyptic number.

54666687 is a deficient number, since it is larger than the sum of its proper divisors (19773249).

54666687 is a wasteful number, since it uses less digits than its factorization.

54666687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387757.

The product of its digits is 1451520, while the sum is 48.

The square root of 54666687 is about 7393.6923793190. The cubic root of 54666687 is about 379.5254625926.

The spelling of 54666687 in words is "fifty-four million, six hundred sixty-six thousand, six hundred eighty-seven".