7640023 has 2 divisors, whose sum is σ = 7640024. Its totient is φ = 7640022.

The previous prime is 7639999. The next prime is 7640029. The reversal of 7640023 is 3200467.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7640023 - 2¹³ = 7631831 is a prime.

7640023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7639976 and 7640003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7640029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820011 + 3820012.

It is an arithmetic number, because the mean of its divisors is an integer number (3820012).

Almost surely, 2^7640023 is an apocalyptic number.

7640023 is a deficient number, since it is larger than the sum of its proper divisors (1).

7640023 is an equidigital number, since it uses as much as digits as its factorization.

7640023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 7640023 is about 2764.0591527679. The cubic root of 7640023 is about 196.9540377369.

The spelling of 7640023 in words is "seven million, six hundred forty thousand, twenty-three".