65993315 has 4 divisors (see below), whose sum is σ = 79191984. Its totient is φ = 52794648.

The previous prime is 65993309. The next prime is 65993351. The reversal of 65993315 is 51339956.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65993315 - 2¹⁶ = 65927779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6599327 + ... + 6599336.

It is an arithmetic number, because the mean of its divisors is an integer number (19797996).

Almost surely, 2^65993315 is an apocalyptic number.

65993315 is a deficient number, since it is larger than the sum of its proper divisors (13198669).

65993315 is a wasteful number, since it uses less digits than its factorization.

65993315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13198668.

The product of its digits is 109350, while the sum is 41.

The square root of 65993315 is about 8123.6269609085. The cubic root of 65993315 is about 404.1103573139.

The spelling of 65993315 in words is "sixty-five million, nine hundred ninety-three thousand, three hundred fifteen".