166654540 has 48 divisors (see below), whose sum is σ = 378907200. Its totient is φ = 61205760.

The previous prime is 166654531. The next prime is 166654571. The reversal of 166654540 is 45456661.

It is a super-2 number, since 2×166654540² = 55547471405223200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166654540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50130 + ... + 53350.

It is an arithmetic number, because the mean of its divisors is an integer number (7893900).

Almost surely, 2^166654540 is an apocalyptic number.

166654540 is a gapful number since it is divisible by the number (10) 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 166654540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189453600).

166654540 is an abundant number, since it is smaller than the sum of its proper divisors (212252660).

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

166654540 is a wasteful number, since it uses less digits than its factorization.

166654540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442 (or 3440 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 166654540 is about 12909.4748150341. The cubic root of 166654540 is about 550.3078607017.

The spelling of 166654540 in words is "one hundred sixty-six million, six hundred fifty-four thousand, five hundred forty".