7681546 has 12 divisors (see below), whose sum is σ = 11667222. Its totient is φ = 3792944.

The previous prime is 7681543. The next prime is 7681573. The reversal of 7681546 is 6451867.

It can be written as a sum of positive squares in 3 ways, for example, as 5313025 + 2368521 = 2305^2 + 1539^2 .

It is a super-2 number, since 2×7681546² = 118012297900232, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7681543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44316 + ... + 44488.

Almost surely, 2^7681546 is an apocalyptic number.

7681546 is a deficient number, since it is larger than the sum of its proper divisors (3985676).

7681546 is a wasteful number, since it uses less digits than its factorization.

7681546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 324 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 7681546 is about 2771.5602104230. The cubic root of 7681546 is about 197.3102038216.

The spelling of 7681546 in words is "seven million, six hundred eighty-one thousand, five hundred forty-six".