7120681 has 4 divisors (see below), whose sum is σ = 7126864. Its totient is φ = 7114500.

The previous prime is 7120679. The next prime is 7120697. The reversal of 7120681 is 1860217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7120681 - 2¹ = 7120679 is a prime.

It is a super-2 number, since 2×7120681² = 101408195807522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7120621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795 + ... + 3856.

It is an arithmetic number, because the mean of its divisors is an integer number (1781716).

Almost surely, 2^7120681 is an apocalyptic number.

It is an amenable number.

7120681 is a deficient number, since it is larger than the sum of its proper divisors (6183).

7120681 is a wasteful number, since it uses less digits than its factorization.

7120681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6182.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 7120681 is about 2668.4604175442. The cubic root of 7120681 is about 192.3861675906.

Adding to 7120681 its reverse (1860217), we get a palindrome (8980898).

The spelling of 7120681 in words is "seven million, one hundred twenty thousand, six hundred eighty-one".