166897400 has 24 divisors (see below), whose sum is σ = 388036920. Its totient is φ = 66758880.

The previous prime is 166897399. The next prime is 166897427. The reversal of 166897400 is 4798661.

166897400 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 417044 + ... + 417443.

It is an arithmetic number, because the mean of its divisors is an integer number (16168205).

Almost surely, 2^166897400 is an apocalyptic number.

166897400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166897400 is an abundant number, since it is smaller than the sum of its proper divisors (221139520).

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

166897400 is a wasteful number, since it uses less digits than its factorization.

166897400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834503 (or 834494 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 166897400 is about 12918.8776602304. The cubic root of 166897400 is about 550.5750459410.

The spelling of 166897400 in words is "one hundred sixty-six million, eight hundred ninety-seven thousand, four hundred".