149501666 has 8 divisors (see below), whose sum is σ = 226772460. Its totient is φ = 73910848.

The previous prime is 149501663. The next prime is 149501701. The reversal of 149501666 is 666105941.

149501666 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 143880025 + 5621641 = 11995^2 + 2371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (149501663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419771 + ... + 420126.

Almost surely, 2^149501666 is an apocalyptic number.

149501666 is a deficient number, since it is larger than the sum of its proper divisors (77270794).

149501666 is an equidigital number, since it uses as much as digits as its factorization.

149501666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839988.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 149501666 is about 12227.0873882540. The cubic root of 149501666 is about 530.7402330153.

The spelling of 149501666 in words is "one hundred forty-nine million, five hundred one thousand, six hundred sixty-six".