166423464 has 64 divisors (see below), whose sum is σ = 465480000. Its totient is φ = 55091520.

The previous prime is 166423463. The next prime is 166423487. The reversal of 166423464 is 464324661.

166423464 is a `hidden beast` number, since 1 + 6 + 642 + 3 + 4 + 6 + 4 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (166423463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29599 + ... + 34769.

It is an arithmetic number, because the mean of its divisors is an integer number (7273125).

Almost surely, 2^166423464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166423464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232740000).

166423464 is an abundant number, since it is smaller than the sum of its proper divisors (299056536).

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

166423464 is a wasteful number, since it uses less digits than its factorization.

166423464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5335 (or 5325 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 166423464 is about 12900.5218499098. The cubic root of 166423464 is about 550.0533986722.

The spelling of 166423464 in words is "one hundred sixty-six million, four hundred twenty-three thousand, four hundred sixty-four".