166423396 has 12 divisors (see below), whose sum is σ = 291756780. Its totient is φ = 83064320.

The previous prime is 166423393. The next prime is 166423399. The reversal of 166423396 is 693324661.

It is an interprime number because it is at equal distance from previous prime (166423393) and next prime (166423399).

It can be written as a sum of positive squares in 2 ways, for example, as 18800896 + 147622500 = 4336^2 + 12150^2 .

It is not an unprimeable number, because it can be changed into a prime (166423391) 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, 34285 + ... + 38836.

It is an arithmetic number, because the mean of its divisors is an integer number (24313065).

Almost surely, 2^166423396 is an apocalyptic number.

It is an amenable number.

166423396 is a deficient number, since it is larger than the sum of its proper divisors (125333384).

166423396 is a wasteful number, since it uses less digits than its factorization.

166423396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73694 (or 73692 counting only the distinct ones).

The product of its digits is 139968, while the sum is 40.

The square root of 166423396 is about 12900.5192143572. The cubic root of 166423396 is about 550.0533237556.

The spelling of 166423396 in words is "one hundred sixty-six million, four hundred twenty-three thousand, three hundred ninety-six".