145784605 has 24 divisors (see below), whose sum is σ = 187066152. Its totient is φ = 109043712.

The previous prime is 145784579. The next prime is 145784627. The reversal of 145784605 is 506487541.

It can be written as a sum of positive squares in 12 ways, for example, as 39715204 + 106069401 = 6302^2 + 10299^2 .

It is not a de Polignac number, because 145784605 - 2¹⁷ = 145653533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 336469 + ... + 336901.

It is an arithmetic number, because the mean of its divisors is an integer number (7794423).

Almost surely, 2^145784605 is an apocalyptic number.

It is an amenable number.

145784605 is a deficient number, since it is larger than the sum of its proper divisors (41281547).

145784605 is a wasteful number, since it uses less digits than its factorization.

145784605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 145784605 is about 12074.1295752530. The cubic root of 145784605 is about 526.3046674308.

The spelling of 145784605 in words is "one hundred forty-five million, seven hundred eighty-four thousand, six hundred five".