3968065 has 16 divisors (see below), whose sum is σ = 4965840. Its totient is φ = 3041280.

The previous prime is 3968053. The next prime is 3968071. The reversal of 3968065 is 5608693.

It is a Cunningham number, because it is equal to 1992²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 59536 + 3908529 = 244^2 + 1977^2 .

It is not a de Polignac number, because 3968065 - 2⁹ = 3967553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16345 + ... + 16585.

It is an arithmetic number, because the mean of its divisors is an integer number (310365).

Almost surely, 2^3968065 is an apocalyptic number.

It is an amenable number.

3968065 is a deficient number, since it is larger than the sum of its proper divisors (997775).

3968065 is a wasteful number, since it uses less digits than its factorization.

3968065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 3968065 is about 1992.0002510040. Note that the first 3 decimals coincide. The cubic root of 3968065 is about 158.3165288413.

The spelling of 3968065 in words is "three million, nine hundred sixty-eight thousand, sixty-five".