166653040 has 80 divisors (see below), whose sum is σ = 412661088. Its totient is φ = 62373888.

The previous prime is 166653031. The next prime is 166653059. The reversal of 166653040 is 40356661.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 166652993 and 166653011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384664 + ... + 385096.

Almost surely, 2^166653040 is an apocalyptic number.

166653040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166653040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206330544).

166653040 is an abundant number, since it is smaller than the sum of its proper divisors (246008048).

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

166653040 is a wasteful number, since it uses less digits than its factorization.

166653040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 166653040 is about 12909.4167180396. The cubic root of 166653040 is about 550.3062096530.

The spelling of 166653040 in words is "one hundred sixty-six million, six hundred fifty-three thousand, forty".