65396663 has 4 divisors (see below), whose sum is σ = 65594568. Its totient is φ = 65198760.

The previous prime is 65396629. The next prime is 65396687. The reversal of 65396663 is 36669356.

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 65396663 - 2⁸ = 65396407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65396963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98456 + ... + 99117.

It is an arithmetic number, because the mean of its divisors is an integer number (16398642).

Almost surely, 2^65396663 is an apocalyptic number.

65396663 is a deficient number, since it is larger than the sum of its proper divisors (197905).

65396663 is a wasteful number, since it uses less digits than its factorization.

65396663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197904.

The product of its digits is 524880, while the sum is 44.

The square root of 65396663 is about 8086.8203269270. The cubic root of 65396663 is about 402.8888014251. Note that the first 4 decimals are identical.

The spelling of 65396663 in words is "sixty-five million, three hundred ninety-six thousand, six hundred sixty-three".