7928761 has 2 divisors, whose sum is σ = 7928762. Its totient is φ = 7928760.

The previous prime is 7928717. The next prime is 7928797. The reversal of 7928761 is 1678297.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5089536 + 2839225 = 2256^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 7928761 - 2¹¹ = 7926713 is a prime.

It is an Ulam number.

7928761 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (7928161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3964380 + 3964381.

It is an arithmetic number, because the mean of its divisors is an integer number (3964381).

Almost surely, 2^7928761 is an apocalyptic number.

It is an amenable number.

7928761 is a deficient number, since it is larger than the sum of its proper divisors (1).

7928761 is an equidigital number, since it uses as much as digits as its factorization.

7928761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 40.

The square root of 7928761 is about 2815.8055685718. The cubic root of 7928761 is about 199.4045707459.

The spelling of 7928761 in words is "seven million, nine hundred twenty-eight thousand, seven hundred sixty-one".