7661723 has 2 divisors, whose sum is σ = 7661724. Its totient is φ = 7661722.

The previous prime is 7661707. The next prime is 7661741. The reversal of 7661723 is 3271667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7661723 - 2⁴ = 7661707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7661723.

It is not a weakly prime, because it can be changed into another prime (7669723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3830861 + 3830862.

It is an arithmetic number, because the mean of its divisors is an integer number (3830862).

Almost surely, 2^7661723 is an apocalyptic number.

7661723 is a deficient number, since it is larger than the sum of its proper divisors (1).

7661723 is an equidigital number, since it uses as much as digits as its factorization.

7661723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 32.

The square root of 7661723 is about 2767.9817557202. The cubic root of 7661723 is about 197.1403313556.

The spelling of 7661723 in words is "seven million, six hundred sixty-one thousand, seven hundred twenty-three".