166666464 has 96 divisors (see below), whose sum is σ = 507306240. Its totient is φ = 53133696.

The previous prime is 166666417. The next prime is 166666469. The reversal of 166666464 is 464666661.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166666469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15679 + ... + 24065.

It is an arithmetic number, because the mean of its divisors is an integer number (5284440).

Almost surely, 2^166666464 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 166666464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253653120).

166666464 is an abundant number, since it is smaller than the sum of its proper divisors (340639776).

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

166666464 is a wasteful number, since it uses less digits than its factorization.

166666464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8429 (or 8415 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 166666464 is about 12909.9366381094. The cubic root of 166666464 is about 550.3209850855.

The spelling of 166666464 in words is "one hundred sixty-six million, six hundred sixty-six thousand, four hundred sixty-four".