1864065 has 32 divisors (see below), whose sum is σ = 3499776. Its totient is φ = 829440.

The previous prime is 1864043. The next prime is 1864069. The reversal of 1864065 is 5604681.

It is not a de Polignac number, because 1864065 - 2⁶ = 1864001 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1864069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4089 + ... + 4521.

It is an arithmetic number, because the mean of its divisors is an integer number (109368).

2^1864065 is an apocalyptic number.

1864065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1864065 is a deficient number, since it is larger than the sum of its proper divisors (1635711).

1864065 is a wasteful number, since it uses less digits than its factorization.

1864065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1864065 is about 1365.3076576362. The cubic root of 1864065 is about 123.0704203796.

The spelling of 1864065 in words is "one million, eight hundred sixty-four thousand, sixty-five".