166652939 has 4 divisors (see below), whose sum is σ = 166712040. Its totient is φ = 166593840.

The previous prime is 166652911. The next prime is 166652953. The reversal of 166652939 is 939256661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939256661 = 7 ⋅134179523.

It is a cyclic number.

It is not a de Polignac number, because 166652939 - 2¹² = 166648843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166652893 and 166652902.

It is not an unprimeable number, because it can be changed into a prime (166652909) 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, 25097 + ... + 31034.

It is an arithmetic number, because the mean of its divisors is an integer number (41678010).

Almost surely, 2^166652939 is an apocalyptic number.

166652939 is a deficient number, since it is larger than the sum of its proper divisors (59101).

166652939 is an equidigital number, since it uses as much as digits as its factorization.

166652939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59100.

The product of its digits is 524880, while the sum is 47.

The square root of 166652939 is about 12909.4128061659. The cubic root of 166652939 is about 550.3060984820.

The spelling of 166652939 in words is "one hundred sixty-six million, six hundred fifty-two thousand, nine hundred thirty-nine".