53867665 has 16 divisors (see below), whose sum is σ = 66233088. Its totient is φ = 42045696.

The previous prime is 53867659. The next prime is 53867683. The reversal of 53867665 is 56676835.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 53867665 - 2⁷ = 53867537 is a prime.

It is a Duffinian number.

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, 37144 + ... + 38566.

It is an arithmetic number, because the mean of its divisors is an integer number (4139568).

Almost surely, 2^53867665 is an apocalyptic number.

It is an amenable number.

53867665 is a deficient number, since it is larger than the sum of its proper divisors (12365423).

53867665 is a wasteful number, since it uses less digits than its factorization.

53867665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608.

The product of its digits is 907200, while the sum is 46.

The square root of 53867665 is about 7339.4594487605. The cubic root of 53867665 is about 377.6673000831.

The spelling of 53867665 in words is "fifty-three million, eight hundred sixty-seven thousand, six hundred sixty-five".