166423936 has 64 divisors (see below), whose sum is σ = 380835360. Its totient is φ = 70963200.

The previous prime is 166423927. The next prime is 166423937. The reversal of 166423936 is 639324661.

166423936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166423937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251446 + ... + 252106.

Almost surely, 2^166423936 is an apocalyptic number.

166423936 is a gapful number since it is divisible by the number (16) 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 166423936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190417680).

166423936 is an abundant number, since it is smaller than the sum of its proper divisors (214411424).

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

166423936 is an equidigital number, since it uses as much as digits as its factorization.

166423936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 951 counting only the distinct ones).

The product of its digits is 139968, while the sum is 40.

The square root of 166423936 is about 12900.5401437304. The cubic root of 166423936 is about 550.0539186809.

It can be divided in two parts, 1664 and 23936, that added together give a square (25600 = 160²).

The spelling of 166423936 in words is "one hundred sixty-six million, four hundred twenty-three thousand, nine hundred thirty-six".