7664737 has 2 divisors, whose sum is σ = 7664738. Its totient is φ = 7664736.

The previous prime is 7664717. The next prime is 7664753. The reversal of 7664737 is 7374667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7623121 + 41616 = 2761^2 + 204^2 .

It is an emirp because it is prime and its reverse (7374667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7664737 - 2¹⁵ = 7631969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7664737.

It is not a weakly prime, because it can be changed into another prime (7664717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832368 + 3832369.

It is an arithmetic number, because the mean of its divisors is an integer number (3832369).

Almost surely, 2^7664737 is an apocalyptic number.

It is an amenable number.

7664737 is a deficient number, since it is larger than the sum of its proper divisors (1).

7664737 is an equidigital number, since it uses as much as digits as its factorization.

7664737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 40.

The square root of 7664737 is about 2768.5261421919. The cubic root of 7664737 is about 197.1661785905.

The spelling of 7664737 in words is "seven million, six hundred sixty-four thousand, seven hundred thirty-seven".