145990612 has 6 divisors (see below), whose sum is σ = 255483578. Its totient is φ = 72995304.

The previous prime is 145990597. The next prime is 145990613. The reversal of 145990612 is 216099541.

145990612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 118069956 + 27920656 = 10866^2 + 5284^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145990613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18248823 + ... + 18248830.

Almost surely, 2^145990612 is an apocalyptic number.

It is an amenable number.

145990612 is a deficient number, since it is larger than the sum of its proper divisors (109492966).

145990612 is a wasteful number, since it uses less digits than its factorization.

145990612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36497657 (or 36497655 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 145990612 is about 12082.6574891453. The cubic root of 145990612 is about 526.5524563186.

The spelling of 145990612 in words is "one hundred forty-five million, nine hundred ninety thousand, six hundred twelve".