145705066 has 16 divisors (see below), whose sum is σ = 235673928. Its totient is φ = 67161600.

The previous prime is 145705061. The next prime is 145705081. The reversal of 145705066 is 660507541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 56685841 + 89019225 = 7529^2 + 9435^2 .

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 7 ways as a sum of consecutive naturals, for example, 19726 + ... + 26086.

Almost surely, 2^145705066 is an apocalyptic number.

145705066 is a deficient number, since it is larger than the sum of its proper divisors (89968862).

145705066 is a wasteful number, since it uses less digits than its factorization.

145705066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7257.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 145705066 is about 12070.8353480610. The cubic root of 145705066 is about 526.2089340429.

The spelling of 145705066 in words is "one hundred forty-five million, seven hundred five thousand, sixty-six".