166420600 has 24 divisors (see below), whose sum is σ = 386928360. Its totient is φ = 66568160.

The previous prime is 166420567. The next prime is 166420603. The reversal of 166420600 is 6024661.

It is a happy number.

166420600 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166420600² = 55391632208720000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166420603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 415852 + ... + 416251.

It is an arithmetic number, because the mean of its divisors is an integer number (16122015).

Almost surely, 2^166420600 is an apocalyptic number.

166420600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166420600 is an abundant number, since it is smaller than the sum of its proper divisors (220507760).

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

166420600 is a wasteful number, since it uses less digits than its factorization.

166420600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832119 (or 832110 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 166420600 is about 12900.4108461708. The cubic root of 166420600 is about 550.0502433439.

The spelling of 166420600 in words is "one hundred sixty-six million, four hundred twenty thousand, six hundred".