7681626 has 12 divisors (see below), whose sum is σ = 16643562. Its totient is φ = 2560536.

The previous prime is 7681613. The next prime is 7681631. The reversal of 7681626 is 6261867.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5294601 + 2387025 = 2301^2 + 1545^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213361 + ... + 213396.

Almost surely, 2^7681626 is an apocalyptic number.

7681626 is an abundant number, since it is smaller than the sum of its proper divisors (8961936).

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

7681626 is a wasteful number, since it uses less digits than its factorization.

7681626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426765 (or 426762 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 7681626 is about 2771.5746426896. The cubic root of 7681626 is about 197.3108887862.

The spelling of 7681626 in words is "seven million, six hundred eighty-one thousand, six hundred twenty-six".