166404526 has 4 divisors (see below), whose sum is σ = 249606792. Its totient is φ = 83202262.

The previous prime is 166404499. The next prime is 166404529. The reversal of 166404526 is 625404661.

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

It is a junction number, because it is equal to n+sod(n) for n = 166404491 and 166404500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166404529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41601130 + ... + 41601133.

It is an arithmetic number, because the mean of its divisors is an integer number (62401698).

Almost surely, 2^166404526 is an apocalyptic number.

166404526 is a deficient number, since it is larger than the sum of its proper divisors (83202266).

166404526 is an equidigital number, since it uses as much as digits as its factorization.

166404526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83202265.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 166404526 is about 12899.7878277125. The cubic root of 166404526 is about 550.0325336127.

The spelling of 166404526 in words is "one hundred sixty-six million, four hundred four thousand, five hundred twenty-six".