166526406 has 24 divisors (see below), whose sum is σ = 362703744. Its totient is φ = 55217040.

The previous prime is 166526299. The next prime is 166526411. The reversal of 166526406 is 604625661.

It is a happy number.

166526406 is a `hidden beast` number, since 1 + 6 + 6 + 5 + 2 + 640 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20781 + ... + 27656.

It is an arithmetic number, because the mean of its divisors is an integer number (15112656).

Almost surely, 2^166526406 is an apocalyptic number.

166526406 is an abundant number, since it is smaller than the sum of its proper divisors (196177338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166526406 is a wasteful number, since it uses less digits than its factorization.

166526406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48636 (or 48633 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 166526406 is about 12904.5110717144. The cubic root of 166526406 is about 550.1667879838.

The spelling of 166526406 in words is "one hundred sixty-six million, five hundred twenty-six thousand, four hundred six".