166766040 has 448 divisors, whose sum is σ = 692524800. Its totient is φ = 35271936.

The previous prime is 166766023. The next prime is 166766051. The reversal of 166766040 is 40667661.

166766040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 166765986 and 166766004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 3878259 + ... + 3878301.

Almost surely, 2^166766040 is an apocalyptic number.

166766040 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 166766040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346262400).

166766040 is an abundant number, since it is smaller than the sum of its proper divisors (525758760).

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

166766040 is a wasteful number, since it uses less digits than its factorization.

166766040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 166766040 is about 12913.7926264905. The cubic root of 166766040 is about 550.4305609242.

The spelling of 166766040 in words is "one hundred sixty-six million, seven hundred sixty-six thousand, forty".