166750545 has 16 divisors (see below), whose sum is σ = 287324352. Its totient is φ = 82092480.

The previous prime is 166750541. The next prime is 166750547. The reversal of 166750545 is 545057661.

It is not a de Polignac number, because 166750545 - 2² = 166750541 is a prime.

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 (166750541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427371 + ... + 427760.

It is an arithmetic number, because the mean of its divisors is an integer number (17957772).

Almost surely, 2^166750545 is an apocalyptic number.

166750545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166750545 is a deficient number, since it is larger than the sum of its proper divisors (120573807).

166750545 is a wasteful number, since it uses less digits than its factorization.

166750545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855152.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 166750545 is about 12913.1926726120. The cubic root of 166750545 is about 550.4135127176.

The spelling of 166750545 in words is "one hundred sixty-six million, seven hundred fifty thousand, five hundred forty-five".