7687642 has 8 divisors (see below), whose sum is σ = 11661300. Its totient is φ = 3800544.

The previous prime is 7687637. The next prime is 7687651. The reversal of 7687642 is 2467867.

It can be written as a sum of positive squares in 2 ways, for example, as 6046681 + 1640961 = 2459^2 + 1281^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 7687595 and 7687604.

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, 21417 + ... + 21772.

Almost surely, 2^7687642 is an apocalyptic number.

7687642 is a deficient number, since it is larger than the sum of its proper divisors (3973658).

7687642 is a wasteful number, since it uses less digits than its factorization.

7687642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43280.

The product of its digits is 112896, while the sum is 40.

The square root of 7687642 is about 2772.6597339017. The cubic root of 7687642 is about 197.3623845053.

The spelling of 7687642 in words is "seven million, six hundred eighty-seven thousand, six hundred forty-two".