2640115 has 8 divisors (see below), whose sum is σ = 3270528. Its totient is φ = 2043840.

The previous prime is 2640067. The next prime is 2640137. The reversal of 2640115 is 5110462.

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

It is not a de Polignac number, because 2640115 - 2¹⁵ = 2607347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2640092 and 2640101.

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, 8362 + ... + 8671.

It is an arithmetic number, because the mean of its divisors is an integer number (408816).

2^2640115 is an apocalyptic number.

2640115 is a deficient number, since it is larger than the sum of its proper divisors (630413).

2640115 is a wasteful number, since it uses less digits than its factorization.

2640115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17069.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2640115 is about 1624.8430693455. The cubic root of 2640115 is about 138.2104713859.

Adding to 2640115 its reverse (5110462), we get a palindrome (7750577).

The spelling of 2640115 in words is "two million, six hundred forty thousand, one hundred fifteen".