53686699 has 16 divisors (see below), whose sum is σ = 60770304. Its totient is φ = 46987200.

The previous prime is 53686681. The next prime is 53686733. The reversal of 53686699 is 99668635.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53686699 - 2¹¹ = 53684651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53686099) 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, 106482 + ... + 106984.

It is an arithmetic number, because the mean of its divisors is an integer number (3798144).

Almost surely, 2^53686699 is an apocalyptic number.

53686699 is a deficient number, since it is larger than the sum of its proper divisors (7083605).

53686699 is a wasteful number, since it uses less digits than its factorization.

53686699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858.

The product of its digits is 2099520, while the sum is 52.

The square root of 53686699 is about 7327.1207851379. The cubic root of 53686699 is about 377.2439068304.

The spelling of 53686699 in words is "fifty-three million, six hundred eighty-six thousand, six hundred ninety-nine".