7681123 has 2 divisors, whose sum is σ = 7681124. Its totient is φ = 7681122.

The previous prime is 7681109. The next prime is 7681147. The reversal of 7681123 is 3211867.

It is a weak prime.

It is an emirp because it is prime and its reverse (3211867) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7681123 is a prime.

It is a super-2 number, since 2×7681123² = 117999301082258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7681091 and 7681100.

It is not a weakly prime, because it can be changed into another prime (7681153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3840561 + 3840562.

It is an arithmetic number, because the mean of its divisors is an integer number (3840562).

Almost surely, 2^7681123 is an apocalyptic number.

7681123 is a deficient number, since it is larger than the sum of its proper divisors (1).

7681123 is an equidigital number, since it uses as much as digits as its factorization.

7681123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 7681123 is about 2771.4838985641. The cubic root of 7681123 is about 197.3065819922.

It can be divided in two parts, 768 and 1123, that added together give a triangular number (1891 = T₆₁).

The spelling of 7681123 in words is "seven million, six hundred eighty-one thousand, one hundred twenty-three".