145475666 has 32 divisors (see below), whose sum is σ = 263285760. Its totient is φ = 58891536.

The previous prime is 145475639. The next prime is 145475683. The reversal of 145475666 is 666574541.

145475666 is digitally balanced in base 3, 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, 128981 + ... + 130103.

It is an arithmetic number, because the mean of its divisors is an integer number (8227680).

Almost surely, 2^145475666 is an apocalyptic number.

145475666 is a deficient number, since it is larger than the sum of its proper divisors (117810094).

145475666 is a wasteful number, since it uses less digits than its factorization.

145475666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638.

The product of its digits is 604800, while the sum is 44.

The square root of 145475666 is about 12061.3293628853. The cubic root of 145475666 is about 525.9326321988.

The spelling of 145475666 in words is "one hundred forty-five million, four hundred seventy-five thousand, six hundred sixty-six".