18770065 has 8 divisors (see below), whose sum is σ = 22558248. Its totient is φ = 14993280.

The previous prime is 18770053. The next prime is 18770071. The reversal of 18770065 is 56007781.

18770065 = 3063² + 3064².

It can be written as a sum of positive squares in 4 ways, for example, as 374544 + 18395521 = 612^2 + 4289^2 .

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

It is not a de Polignac number, because 18770065 - 2⁵ = 18770033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18770065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1339 + ... + 6271.

It is an arithmetic number, because the mean of its divisors is an integer number (2819781).

Almost surely, 2^18770065 is an apocalyptic number.

18770065 is the 3064-th centered square number.

It is an amenable number.

18770065 is a deficient number, since it is larger than the sum of its proper divisors (3788183).

18770065 is an equidigital number, since it uses as much as digits as its factorization.

18770065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5699.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 18770065 is about 4332.4433060341. The cubic root of 18770065 is about 265.7593740416.

The spelling of 18770065 in words is "eighteen million, seven hundred seventy thousand, sixty-five".