7072981 has 2 divisors, whose sum is σ = 7072982. Its totient is φ = 7072980.

The previous prime is 7072963. The next prime is 7072987. The reversal of 7072981 is 1892707.

7072981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3591025 + 3481956 = 1895^2 + 1866^2 .

It is a cyclic number.

It is not a de Polignac number, because 7072981 - 2⁷ = 7072853 is a prime.

It is a super-2 number, since 2×7072981² = 100054120452722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7072987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3536490 + 3536491.

It is an arithmetic number, because the mean of its divisors is an integer number (3536491).

Almost surely, 2^7072981 is an apocalyptic number.

It is an amenable number.

7072981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7072981 is an equidigital number, since it uses as much as digits as its factorization.

7072981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 7072981 is about 2659.5076612035. The cubic root of 7072981 is about 191.9556194442.

The spelling of 7072981 in words is "seven million, seventy-two thousand, nine hundred eighty-one".