166000340 has 96 divisors (see below), whose sum is σ = 404490240. Its totient is φ = 56592000.

The previous prime is 166000313. The next prime is 166000357. The reversal of 166000340 is 43000661.

It is a super-2 number, since 2×166000340² = 55112225760231200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 631049 + ... + 631311.

It is an arithmetic number, because the mean of its divisors is an integer number (4213440).

Almost surely, 2^166000340 is an apocalyptic number.

166000340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166000340 is the 10520-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166000340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202245120).

166000340 is an abundant number, since it is smaller than the sum of its proper divisors (238489900).

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

166000340 is a wasteful number, since it uses less digits than its factorization.

166000340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 166000340 is about 12884.1119212773. Note that the first 3 decimals coincide. The cubic root of 166000340 is about 549.5868412289.

It can be divided in two parts, 166000 and 340, that multiplied together give a triangular number (56440000 = T₁₀₆₂₄).

The spelling of 166000340 in words is "one hundred sixty-six million, three hundred forty", and thus it is an aban number.