145094665 has 4 divisors (see below), whose sum is σ = 174113604. Its totient is φ = 116075728.

The previous prime is 145094623. The next prime is 145094689. The reversal of 145094665 is 566490541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89189136 + 55905529 = 9444^2 + 7477^2 .

It is a cyclic number.

It is not a de Polignac number, because 145094665 - 2⁹ = 145094153 is a prime.

It is a super-2 number, since 2×145094665² = 42104923622924450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14509462 + ... + 14509471.

It is an arithmetic number, because the mean of its divisors is an integer number (43528401).

Almost surely, 2^145094665 is an apocalyptic number.

It is an amenable number.

145094665 is a deficient number, since it is larger than the sum of its proper divisors (29018939).

145094665 is an equidigital number, since it uses as much as digits as its factorization.

145094665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29018938.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 145094665 is about 12045.5246876174. The cubic root of 145094665 is about 525.4730913196.

The spelling of 145094665 in words is "one hundred forty-five million, ninety-four thousand, six hundred sixty-five".