7406981 has 2 divisors, whose sum is σ = 7406982. Its totient is φ = 7406980.

The previous prime is 7406969. The next prime is 7406983. The reversal of 7406981 is 1896047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5597956 + 1809025 = 2366^2 + 1345^2 .

It is an emirp because it is prime and its reverse (1896047) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7406981 is a prime.

It is a super-2 number, since 2×7406981² = 109726735068722, which contains 22 as substring.

Together with 7406983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7406983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3703490 + 3703491.

It is an arithmetic number, because the mean of its divisors is an integer number (3703491).

Almost surely, 2^7406981 is an apocalyptic number.

It is an amenable number.

7406981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7406981 is an equidigital number, since it uses as much as digits as its factorization.

7406981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 7406981 is about 2721.5769325889. The cubic root of 7406981 is about 194.9307753406.

The spelling of 7406981 in words is "seven million, four hundred six thousand, nine hundred eighty-one".