166702426 has 20 divisors (see below), whose sum is σ = 275105610. Its totient is φ = 75760520.

The previous prime is 166702423. The next prime is 166702439. The reversal of 166702426 is 624207661.

166702426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 161417025 + 5285401 = 12705^2 + 2299^2 .

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 166702391 and 166702400.

It is not an unprimeable number, because it can be changed into a prime (166702421) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 26436 + ... + 32128.

Almost surely, 2^166702426 is an apocalyptic number.

166702426 is a deficient number, since it is larger than the sum of its proper divisors (108403184).

166702426 is an frugal number, since it uses more digits than its factorization.

166702426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739 (or 5706 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 166702426 is about 12911.3293661032. The cubic root of 166702426 is about 550.3605635736.

The spelling of 166702426 in words is "one hundred sixty-six million, seven hundred two thousand, four hundred twenty-six".