145666544 has 40 divisors (see below), whose sum is σ = 295769760. Its totient is φ = 69366528.

The previous prime is 145666541. The next prime is 145666601. The reversal of 145666544 is 445666541.

145666544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145666541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101222 + ... + 102650.

It is an arithmetic number, because the mean of its divisors is an integer number (7394244).

Almost surely, 2^145666544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145666544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147884880).

145666544 is an abundant number, since it is smaller than the sum of its proper divisors (150103216).

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

145666544 is a wasteful number, since it uses less digits than its factorization.

145666544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737 (or 1731 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The square root of 145666544 is about 12069.2395783662. The cubic root of 145666544 is about 526.1625563207.

The spelling of 145666544 in words is "one hundred forty-five million, six hundred sixty-six thousand, five hundred forty-four".