149655666 has 16 divisors (see below), whose sum is σ = 315064800. Its totient is φ = 47259648.

The previous prime is 149655659. The next prime is 149655719. The reversal of 149655666 is 666556941.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656271 + ... + 656498.

It is an arithmetic number, because the mean of its divisors is an integer number (19691550).

Almost surely, 2^149655666 is an apocalyptic number.

149655666 is an abundant number, since it is smaller than the sum of its proper divisors (165409134).

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

149655666 is a wasteful number, since it uses less digits than its factorization.

149655666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312793.

The product of its digits is 1166400, while the sum is 48.

The square root of 149655666 is about 12233.3832605702. The cubic root of 149655666 is about 530.9224070108.

The spelling of 149655666 in words is "one hundred forty-nine million, six hundred fifty-five thousand, six hundred sixty-six".