7640115 has 16 divisors (see below), whose sum is σ = 13970688. Its totient is φ = 3492576.

The previous prime is 7640069. The next prime is 7640131. The reversal of 7640115 is 5110467.

It is not a de Polignac number, because 7640115 - 2⁸ = 7639859 is a prime.

7640115 is a lucky number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 36277 + ... + 36486.

It is an arithmetic number, because the mean of its divisors is an integer number (873168).

Almost surely, 2^7640115 is an apocalyptic number.

7640115 is a deficient number, since it is larger than the sum of its proper divisors (6330573).

7640115 is a wasteful number, since it uses less digits than its factorization.

7640115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72778.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 7640115 is about 2764.0757949087. The cubic root of 7640115 is about 196.9548282973.

The spelling of 7640115 in words is "seven million, six hundred forty thousand, one hundred fifteen".