145705065 has 16 divisors (see below), whose sum is σ = 254321856. Its totient is φ = 70644800.

The previous prime is 145705061. The next prime is 145705081. The reversal of 145705065 is 560507541.

It is not a de Polignac number, because 145705065 - 2² = 145705061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145705061) 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 15 ways as a sum of consecutive naturals, for example, 441366 + ... + 441695.

It is an arithmetic number, because the mean of its divisors is an integer number (15895116).

Almost surely, 2^145705065 is an apocalyptic number.

145705065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145705065 is a deficient number, since it is larger than the sum of its proper divisors (108616791).

145705065 is a wasteful number, since it uses less digits than its factorization.

145705065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883080.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 145705065 is about 12070.8353066389. The cubic root of 145705065 is about 526.2089328391.

The spelling of 145705065 in words is "one hundred forty-five million, seven hundred five thousand, sixty-five".