2640085 has 8 divisors (see below), whose sum is σ = 3620736. Its totient is φ = 1810320.

The previous prime is 2640067. The next prime is 2640137. The reversal of 2640085 is 5800462.

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

It is not a de Polignac number, because 2640085 - 2²¹ = 542933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37681 + ... + 37750.

It is an arithmetic number, because the mean of its divisors is an integer number (452592).

2^2640085 is an apocalyptic number.

It is an amenable number.

2640085 is a deficient number, since it is larger than the sum of its proper divisors (980651).

2640085 is an equidigital number, since it uses as much as digits as its factorization.

2640085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75443.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2640085 is about 1624.8338376585. The cubic root of 2640085 is about 138.2099478822.

The spelling of 2640085 in words is "two million, six hundred forty thousand, eighty-five".