7605981 has 10 divisors (see below), whose sum is σ = 11362142. Its totient is φ = 5070600.

The previous prime is 7605971. The next prime is 7606009. The reversal of 7605981 is 1895067.

7605981 is a `hidden beast` number, since 7 + 60 + 598 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6812100 + 793881 = 2610^2 + 891^2 .

It is not a de Polignac number, because 7605981 - 2⁷ = 7605853 is a prime.

It is a super-2 number, since 2×7605981² = 115701893944722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7605971) 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 9 ways as a sum of consecutive naturals, for example, 46870 + ... + 47031.

Almost surely, 2^7605981 is an apocalyptic number.

It is an amenable number.

7605981 is a deficient number, since it is larger than the sum of its proper divisors (3756161).

7605981 is an equidigital number, since it uses as much as digits as its factorization.

7605981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93913 (or 93904 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 7605981 is about 2757.8943054439. The cubic root of 7605981 is about 196.6610764794.

The spelling of 7605981 in words is "seven million, six hundred five thousand, nine hundred eighty-one".