166747349 has 4 divisors (see below), whose sum is σ = 166901280. Its totient is φ = 166593420.

The previous prime is 166747333. The next prime is 166747387. The reversal of 166747349 is 943747661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166747349 - 2⁴ = 166747333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166744349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75329 + ... + 77510.

It is an arithmetic number, because the mean of its divisors is an integer number (41725320).

Almost surely, 2^166747349 is an apocalyptic number.

It is an amenable number.

166747349 is a deficient number, since it is larger than the sum of its proper divisors (153931).

166747349 is a wasteful number, since it uses less digits than its factorization.

166747349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153930.

The product of its digits is 762048, while the sum is 47.

The square root of 166747349 is about 12913.0689226071. The cubic root of 166747349 is about 550.4099962217.

The spelling of 166747349 in words is "one hundred sixty-six million, seven hundred forty-seven thousand, three hundred forty-nine".