493185665 has 32 divisors (see below), whose sum is σ = 728580096. Its totient is φ = 313030080.

The previous prime is 493185643. The next prime is 493185689. The reversal of 493185665 is 566581394.

It is a happy number.

It is not a de Polignac number, because 493185665 - 2²⁶ = 426076801 is a prime.

It is a super-2 number, since 2×493185665² = 486464200322984450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) 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 31 ways as a sum of consecutive naturals, for example, 15074 + ... + 34836.

It is an arithmetic number, because the mean of its divisors is an integer number (22768128).

Almost surely, 2^493185665 is an apocalyptic number.

It is an amenable number.

493185665 is a deficient number, since it is larger than the sum of its proper divisors (235394431).

493185665 is a wasteful number, since it uses less digits than its factorization.

493185665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19829.

The product of its digits is 777600, while the sum is 47.

The square root of 493185665 is about 22207.7838831343. The cubic root of 493185665 is about 790.0783263684.

The spelling of 493185665 in words is "four hundred ninety-three million, one hundred eighty-five thousand, six hundred sixty-five".