53699668 has 72 divisors (see below), whose sum is σ = 112641984. Its totient is φ = 22195200.

The previous prime is 53699621. The next prime is 53699671. The reversal of 53699668 is 86699635.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 521305 + ... + 521407.

It is an arithmetic number, because the mean of its divisors is an integer number (1564472).

Almost surely, 2^53699668 is an apocalyptic number.

It is an amenable number.

53699668 is an abundant number, since it is smaller than the sum of its proper divisors (58942316).

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

53699668 is a wasteful number, since it uses less digits than its factorization.

53699668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 174 counting only the distinct ones).

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

The square root of 53699668 is about 7328.0057314388. The cubic root of 53699668 is about 377.2742810970.

The spelling of 53699668 in words is "fifty-three million, six hundred ninety-nine thousand, six hundred sixty-eight".