7681315 has 4 divisors (see below), whose sum is σ = 9217584. Its totient is φ = 6145048.

The previous prime is 7681307. The next prime is 7681337. The reversal of 7681315 is 5131867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5131867 = 13 ⋅394759.

It is a cyclic number.

It is not a de Polignac number, because 7681315 - 2³ = 7681307 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768127 + ... + 768136.

It is an arithmetic number, because the mean of its divisors is an integer number (2304396).

Almost surely, 2^7681315 is an apocalyptic number.

7681315 is a deficient number, since it is larger than the sum of its proper divisors (1536269).

7681315 is a wasteful number, since it uses less digits than its factorization.

7681315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536268.

The product of its digits is 5040, while the sum is 31.

The square root of 7681315 is about 2771.5185368314. The cubic root of 7681315 is about 197.3082259596.

The spelling of 7681315 in words is "seven million, six hundred eighty-one thousand, three hundred fifteen".