7011981 has 16 divisors (see below), whose sum is σ = 10670400. Its totient is φ = 4547664.

The previous prime is 7011947. The next prime is 7012001. The reversal of 7011981 is 1891107.

It is not a de Polignac number, because 7011981 - 2⁷ = 7011853 is a prime.

It is a super-2 number, since 2×7011981² = 98335755088722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7011181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2511 + ... + 4508.

It is an arithmetic number, because the mean of its divisors is an integer number (666900).

Almost surely, 2^7011981 is an apocalyptic number.

It is an amenable number.

7011981 is a deficient number, since it is larger than the sum of its proper divisors (3658419).

7011981 is a wasteful number, since it uses less digits than its factorization.

7011981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7065 (or 7059 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 7011981 is about 2648.0145392350. The cubic root of 7011981 is about 191.4021933495.

The spelling of 7011981 in words is "seven million, eleven thousand, nine hundred eighty-one".