55698666 has 32 divisors (see below), whose sum is σ = 114352128. Its totient is φ = 18078000.

The previous prime is 55698659. The next prime is 55698683. The reversal of 55698666 is 66689655.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73791 + ... + 74541.

It is an arithmetic number, because the mean of its divisors is an integer number (3573504).

Almost surely, 2^55698666 is an apocalyptic number.

55698666 is an abundant number, since it is smaller than the sum of its proper divisors (58653462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55698666 is a wasteful number, since it uses less digits than its factorization.

55698666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066.

The product of its digits is 2332800, while the sum is 51.

The square root of 55698666 is about 7463.1538909499. The cubic root of 55698666 is about 381.8987743812.

The spelling of 55698666 in words is "fifty-five million, six hundred ninety-eight thousand, six hundred sixty-six".