2166965696 has 28 divisors (see below), whose sum is σ = 4914369648. Its totient is φ = 928699392.

The previous prime is 2166965683. The next prime is 2166965767. The reversal of 2166965696 is 6965696612.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent 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, 2418041 + ... + 2418936.

Almost surely, 2^2166965696 is an apocalyptic number.

It is an amenable number.

2166965696 is an abundant number, since it is smaller than the sum of its proper divisors (2747403952).

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

2166965696 is an equidigital number, since it uses as much as digits as its factorization.

2166965696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4836996 (or 4836986 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 56.

The square root of 2166965696 is about 46550.6787920434. The cubic root of 2166965696 is about 1294.0488727204.

The spelling of 2166965696 in words is "two billion, one hundred sixty-six million, nine hundred sixty-five thousand, six hundred ninety-six".