7487761 has 2 divisors, whose sum is σ = 7487762. Its totient is φ = 7487760.

The previous prime is 7487759. The next prime is 7487783. The reversal of 7487761 is 1677847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6990736 + 497025 = 2644^2 + 705^2 .

It is an emirp because it is prime and its reverse (1677847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7487761 - 2¹ = 7487759 is a prime.

Together with 7487759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (7487741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3743880 + 3743881.

It is an arithmetic number, because the mean of its divisors is an integer number (3743881).

Almost surely, 2^7487761 is an apocalyptic number.

It is an amenable number.

7487761 is a deficient number, since it is larger than the sum of its proper divisors (1).

7487761 is an equidigital number, since it uses as much as digits as its factorization.

7487761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65856, while the sum is 40.

The square root of 7487761 is about 2736.3773497089. The cubic root of 7487761 is about 195.6368483877.

The spelling of 7487761 in words is "seven million, four hundred eighty-seven thousand, seven hundred sixty-one".