660044345 has 8 divisors (see below), whose sum is σ = 793520520. Its totient is φ = 527057280.

The previous prime is 660044327. The next prime is 660044347. The reversal of 660044345 is 543440066.

It can be written as a sum of positive squares in 4 ways, for example, as 2019241 + 658025104 = 1421^2 + 25652^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660044345 - 2²⁴ = 643267129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660044347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119300 + ... + 124709.

It is an arithmetic number, because the mean of its divisors is an integer number (99190065).

Almost surely, 2^660044345 is an apocalyptic number.

It is an amenable number.

660044345 is a deficient number, since it is larger than the sum of its proper divisors (133476175).

660044345 is a wasteful number, since it uses less digits than its factorization.

660044345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244555.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 660044345 is about 25691.3282062255. The cubic root of 660044345 is about 870.6782683590.

The spelling of 660044345 in words is "six hundred sixty million, forty-four thousand, three hundred forty-five".