145233639 has 12 divisors (see below), whose sum is σ = 210274272. Its totient is φ = 96595200.

The previous prime is 145233631. The next prime is 145233643. The reversal of 145233639 is 936332541.

145233639 = 352² + 353² + ... + 782².

It is a happy number.

145233639 is a `hidden beast` number, since 14 + 5 + 2 + 3 + 3 + 639 = 666.

It is not a de Polignac number, because 145233639 - 2³ = 145233631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145233631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14842 + ... + 22599.

It is an arithmetic number, because the mean of its divisors is an integer number (17522856).

Almost surely, 2^145233639 is an apocalyptic number.

145233639 is a deficient number, since it is larger than the sum of its proper divisors (65040633).

145233639 is a wasteful number, since it uses less digits than its factorization.

145233639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37878 (or 37875 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 145233639 is about 12051.2920054241. The cubic root of 145233639 is about 525.6408066390.

The spelling of 145233639 in words is "one hundred forty-five million, two hundred thirty-three thousand, six hundred thirty-nine".