166653047 has 8 divisors (see below), whose sum is σ = 191372160. Its totient is φ = 143528760.

The previous prime is 166653031. The next prime is 166653059. The reversal of 166653047 is 740356661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166653047 - 2⁴ = 166653031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166653047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166653947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398483 + ... + 398900.

It is an arithmetic number, because the mean of its divisors is an integer number (23921520).

Almost surely, 2^166653047 is an apocalyptic number.

166653047 is a deficient number, since it is larger than the sum of its proper divisors (24719113).

166653047 is a wasteful number, since it uses less digits than its factorization.

166653047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797413.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 166653047 is about 12909.4169891595. The cubic root of 166653047 is about 550.3062173579.

The spelling of 166653047 in words is "one hundred sixty-six million, six hundred fifty-three thousand, forty-seven".