7686940 has 24 divisors (see below), whose sum is σ = 16232832. Its totient is φ = 3057600.

The previous prime is 7686923. The next prime is 7686947. The reversal of 7686940 is 496867.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7686893 and 7686902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7686947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2965 + ... + 4915.

It is an arithmetic number, because the mean of its divisors is an integer number (676368).

Almost surely, 2^7686940 is an apocalyptic number.

It is an amenable number.

7686940 is an abundant number, since it is smaller than the sum of its proper divisors (8545892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7686940 is a wasteful number, since it uses less digits than its factorization.

7686940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157 (or 2155 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 7686940 is about 2772.5331377641. The cubic root of 7686940 is about 197.3563769149.

The spelling of 7686940 in words is "seven million, six hundred eighty-six thousand, nine hundred forty".