166265346 has 64 divisors (see below), whose sum is σ = 375072768. Its totient is φ = 48791808.

The previous prime is 166265339. The next prime is 166265347. The reversal of 166265346 is 643562661.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (166265347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152415 + ... + 153501.

It is an arithmetic number, because the mean of its divisors is an integer number (5860512).

Almost surely, 2^166265346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166265346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187536384).

166265346 is an abundant number, since it is smaller than the sum of its proper divisors (208807422).

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

166265346 is a wasteful number, since it uses less digits than its factorization.

166265346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195.

The product of its digits is 155520, while the sum is 39.

The square root of 166265346 is about 12894.3920368507. The cubic root of 166265346 is about 549.8791425907.

The spelling of 166265346 in words is "one hundred sixty-six million, two hundred sixty-five thousand, three hundred forty-six".