65523966 has 16 divisors (see below), whose sum is σ = 134590224. Its totient is φ = 21250944.

The previous prime is 65523947. The next prime is 65523971. The reversal of 65523966 is 66932556.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147355 + ... + 147798.

It is an arithmetic number, because the mean of its divisors is an integer number (8411889).

Almost surely, 2^65523966 is an apocalyptic number.

65523966 is an abundant number, since it is smaller than the sum of its proper divisors (69066258).

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

65523966 is a wasteful number, since it uses less digits than its factorization.

65523966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295195.

The product of its digits is 291600, while the sum is 42.

The square root of 65523966 is about 8094.6875171312. The cubic root of 65523966 is about 403.1500569005.

The spelling of 65523966 in words is "sixty-five million, five hundred twenty-three thousand, nine hundred sixty-six".