145668384 has 72 divisors (see below), whose sum is σ = 432274752. Its totient is φ = 46442880.

The previous prime is 145668379. The next prime is 145668389. The reversal of 145668384 is 483866541.

145668384 is a `hidden beast` number, since 1 + 4 + 566 + 8 + 3 + 84 = 666.

It is an interprime number because it is at equal distance from previous prime (145668379) and next prime (145668389).

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (145668389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4372 + ... + 17619.

It is an arithmetic number, because the mean of its divisors is an integer number (6003816).

Almost surely, 2^145668384 is an apocalyptic number.

It is an amenable number.

145668384 is an abundant number, since it is smaller than the sum of its proper divisors (286606368).

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

145668384 is a wasteful number, since it uses less digits than its factorization.

145668384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22030 (or 22019 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 145668384 is about 12069.3158049659. The cubic root of 145668384 is about 526.1647717345.

The spelling of 145668384 in words is "one hundred forty-five million, six hundred sixty-eight thousand, three hundred eighty-four".