166247079 has 8 divisors (see below), whose sum is σ = 228813312. Its totient is φ = 107256120.

The previous prime is 166247023. The next prime is 166247099. The reversal of 166247079 is 970742661.

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

It is not a de Polignac number, because 166247079 - 2¹¹ = 166245031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166247079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166247099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 893709 + ... + 893894.

It is an arithmetic number, because the mean of its divisors is an integer number (28601664).

Almost surely, 2^166247079 is an apocalyptic number.

166247079 is a deficient number, since it is larger than the sum of its proper divisors (62566233).

166247079 is a wasteful number, since it uses less digits than its factorization.

166247079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787637.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 166247079 is about 12893.6836862085. The cubic root of 166247079 is about 549.8590040783.

The spelling of 166247079 in words is "one hundred sixty-six million, two hundred forty-seven thousand, seventy-nine".