7640873 has 2 divisors, whose sum is σ = 7640874. Its totient is φ = 7640872.

The previous prime is 7640861. The next prime is 7640879. The reversal of 7640873 is 3780467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7546009 + 94864 = 2747^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 7640873 - 2⁸ = 7640617 is a prime.

It is not a weakly prime, because it can be changed into another prime (7640879) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820436 + 3820437.

It is an arithmetic number, because the mean of its divisors is an integer number (3820437).

Almost surely, 2^7640873 is an apocalyptic number.

It is an amenable number.

7640873 is a deficient number, since it is larger than the sum of its proper divisors (1).

7640873 is an equidigital number, since it uses as much as digits as its factorization.

7640873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 7640873 is about 2764.2129078636. The cubic root of 7640873 is about 196.9613415859.

The spelling of 7640873 in words is "seven million, six hundred forty thousand, eight hundred seventy-three".