166307422 has 4 divisors (see below), whose sum is σ = 249461136. Its totient is φ = 83153710.

The previous prime is 166307417. The next prime is 166307429. The reversal of 166307422 is 224703661.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×166307422² = 55316317224572168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166307429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41576854 + ... + 41576857.

It is an arithmetic number, because the mean of its divisors is an integer number (62365284).

Almost surely, 2^166307422 is an apocalyptic number.

166307422 is a deficient number, since it is larger than the sum of its proper divisors (83153714).

166307422 is an equidigital number, since it uses as much as digits as its factorization.

166307422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83153713.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 166307422 is about 12896.0234956362. The cubic root of 166307422 is about 549.9255237998.

The spelling of 166307422 in words is "one hundred sixty-six million, three hundred seven thousand, four hundred twenty-two".