7506681 has 32 divisors (see below), whose sum is σ = 12730368. Its totient is φ = 3827520.

The previous prime is 7506677. The next prime is 7506701. The reversal of 7506681 is 1866057.

It is not a de Polignac number, because 7506681 - 2² = 7506677 is a prime.

It is a super-2 number, since 2×7506681² = 112700519271522, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7506601) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 8020 + ... + 8906.

It is an arithmetic number, because the mean of its divisors is an integer number (397824).

Almost surely, 2^7506681 is an apocalyptic number.

It is an amenable number.

7506681 is a deficient number, since it is larger than the sum of its proper divisors (5223687).

7506681 is a wasteful number, since it uses less digits than its factorization.

7506681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 7506681 is about 2739.8322941377. The cubic root of 7506681 is about 195.8014875433.

The spelling of 7506681 in words is "seven million, five hundred six thousand, six hundred eighty-one".