145664405 has 16 divisors (see below), whose sum is σ = 185846400. Its totient is φ = 109357248.

The previous prime is 145664399. The next prime is 145664423. The reversal of 145664405 is 504466541.

145664405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 145664405 - 2⁶ = 145664341 is a prime.

It is a congruent number.

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, 5855 + ... + 18044.

It is an arithmetic number, because the mean of its divisors is an integer number (11615400).

Almost surely, 2^145664405 is an apocalyptic number.

It is an amenable number.

145664405 is a deficient number, since it is larger than the sum of its proper divisors (40181995).

145664405 is a wasteful number, since it uses less digits than its factorization.

145664405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23980.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 145664405 is about 12069.1509643388. The cubic root of 145664405 is about 526.1599808787.

The spelling of 145664405 in words is "one hundred forty-five million, six hundred sixty-four thousand, four hundred five".