2640315 has 8 divisors (see below), whose sum is σ = 4224528. Its totient is φ = 1408160.

The previous prime is 2640299. The next prime is 2640317. The reversal of 2640315 is 5130462.

It is a happy number.

2640315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2640315 - 2⁴ = 2640299 is a prime.

2640315 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2640291 and 2640300.

It is not an unprimeable number, because it can be changed into a prime (2640317) by changing a digit.

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, 87996 + ... + 88025.

It is an arithmetic number, because the mean of its divisors is an integer number (528066).

2^2640315 is an apocalyptic number.

2640315 is a deficient number, since it is larger than the sum of its proper divisors (1584213).

2640315 is a wasteful number, since it uses less digits than its factorization.

2640315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176029.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2640315 is about 1624.9046125850. The cubic root of 2640315 is about 138.2139613092.

Adding to 2640315 its reverse (5130462), we get a palindrome (7770777).

The spelling of 2640315 in words is "two million, six hundred forty thousand, three hundred fifteen".