7687994 has 8 divisors (see below), whose sum is σ = 11545140. Its totient is φ = 3839616.

The previous prime is 7687993. The next prime is 7688011. The reversal of 7687994 is 4997867.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7590025 + 97969 = 2755^2 + 313^2 .

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

It is not an unprimeable number, because it can be changed into a prime (7687991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 842 + ... + 4010.

Almost surely, 2^7687994 is an apocalyptic number.

7687994 is a deficient number, since it is larger than the sum of its proper divisors (3857146).

7687994 is a wasteful number, since it uses less digits than its factorization.

7687994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384.

The product of its digits is 762048, while the sum is 50.

The square root of 7687994 is about 2772.7232101312. The cubic root of 7687994 is about 197.3653967206.

The spelling of 7687994 in words is "seven million, six hundred eighty-seven thousand, nine hundred ninety-four".