145668804 has 48 divisors (see below), whose sum is σ = 348147072. Its totient is φ = 47387392.

The previous prime is 145668781. The next prime is 145668833. The reversal of 145668804 is 408866541.

145668804 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, 147697 + ... + 148679.

It is an arithmetic number, because the mean of its divisors is an integer number (7253064).

Almost surely, 2^145668804 is an apocalyptic number.

It is an amenable number.

145668804 is an abundant number, since it is smaller than the sum of its proper divisors (202478268).

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

145668804 is a wasteful number, since it uses less digits than its factorization.

145668804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 145668804 is about 12069.3332044484. Note that the first 3 decimals coincide. The cubic root of 145668804 is about 526.1652774242.

The spelling of 145668804 in words is "one hundred forty-five million, six hundred sixty-eight thousand, eight hundred four".