7765001 has 2 divisors, whose sum is σ = 7765002. Its totient is φ = 7765000.

The previous prime is 7764979. The next prime is 7765003. The reversal of 7765001 is 1005677.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6864400 + 900601 = 2620^2 + 949^2 .

It is an emirp because it is prime and its reverse (1005677) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7765001 - 2¹⁸ = 7502857 is a prime.

Together with 7765003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7765003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3882500 + 3882501.

It is an arithmetic number, because the mean of its divisors is an integer number (3882501).

Almost surely, 2^7765001 is an apocalyptic number.

It is an amenable number.

7765001 is a deficient number, since it is larger than the sum of its proper divisors (1).

7765001 is an equidigital number, since it uses as much as digits as its factorization.

7765001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 7765001 is about 2786.5751380503. The cubic root of 7765001 is about 198.0221806257.

The spelling of 7765001 in words is "seven million, seven hundred sixty-five thousand, one".