145990658 has 16 divisors (see below), whose sum is σ = 239085216. Its totient is φ = 66306240.

The previous prime is 145990651. The next prime is 145990667. The reversal of 145990658 is 856099541.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145990651) 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, 42410 + ... + 45722.

It is an arithmetic number, because the mean of its divisors is an integer number (14942826).

Almost surely, 2^145990658 is an apocalyptic number.

145990658 is a deficient number, since it is larger than the sum of its proper divisors (93094558).

145990658 is a wasteful number, since it uses less digits than its factorization.

145990658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 145990658 is about 12082.6593926999. The cubic root of 145990658 is about 526.5525116221.

The spelling of 145990658 in words is "one hundred forty-five million, nine hundred ninety thousand, six hundred fifty-eight".