653820166 has 8 divisors (see below), whose sum is σ = 991749960. Its totient is φ = 323236848.

The previous prime is 653820161. The next prime is 653820179. The reversal of 653820166 is 661028356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653820161) 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, 1836396 + ... + 1836751.

It is an arithmetic number, because the mean of its divisors is an integer number (123968745).

Almost surely, 2^653820166 is an apocalyptic number.

653820166 is a deficient number, since it is larger than the sum of its proper divisors (337929794).

653820166 is a wasteful number, since it uses less digits than its factorization.

653820166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673238.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 653820166 is about 25569.9074304152. The cubic root of 653820166 is about 867.9328055398.

The spelling of 653820166 in words is "six hundred fifty-three million, eight hundred twenty thousand, one hundred sixty-six".