166653320 has 16 divisors (see below), whose sum is σ = 374970060. Its totient is φ = 66661312.

The previous prime is 166653317. The next prime is 166653341. The reversal of 166653320 is 23356661.

It can be written as a sum of positive squares in 2 ways, for example, as 165533956 + 1119364 = 12866^2 + 1058^2 .

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, 2083127 + ... + 2083206.

Almost surely, 2^166653320 is an apocalyptic number.

166653320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166653320 is an abundant number, since it is smaller than the sum of its proper divisors (208316740).

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

166653320 is a wasteful number, since it uses less digits than its factorization.

166653320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166344 (or 4166340 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 166653320 is about 12909.4275628317. The cubic root of 166653320 is about 550.3065178495.

The spelling of 166653320 in words is "one hundred sixty-six million, six hundred fifty-three thousand, three hundred twenty".