166400626 has 32 divisors (see below), whose sum is σ = 293280768. Its totient is φ = 69325200.

The previous prime is 166400609. The next prime is 166400657. The reversal of 166400626 is 626004661.

166400626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157801 + ... + 158851.

It is an arithmetic number, because the mean of its divisors is an integer number (9165024).

Almost surely, 2^166400626 is an apocalyptic number.

166400626 is a deficient number, since it is larger than the sum of its proper divisors (126880142).

166400626 is a wasteful number, since it uses less digits than its factorization.

166400626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 166400626 is about 12899.6366615498. The cubic root of 166400626 is about 550.0282365669.

The spelling of 166400626 in words is "one hundred sixty-six million, four hundred thousand, six hundred twenty-six".