7467216661 has 2 divisors, whose sum is σ = 7467216662. Its totient is φ = 7467216660.

The previous prime is 7467216623. The next prime is 7467216683. The reversal of 7467216661 is 1666127647.

7467216661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7425096561 + 42120100 = 86169^2 + 6490^2 .

It is a cyclic number.

It is not a de Polignac number, because 7467216661 - 2¹⁷ = 7467085589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7417216661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3733608330 + 3733608331.

It is an arithmetic number, because the mean of its divisors is an integer number (3733608331).

Almost surely, 2^7467216661 is an apocalyptic number.

It is an amenable number.

7467216661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7467216661 is an equidigital number, since it uses as much as digits as its factorization.

7467216661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 7467216661 is about 86413.0583939719. The cubic root of 7467216661 is about 1954.5776008474.

The spelling of 7467216661 in words is "seven billion, four hundred sixty-seven million, two hundred sixteen thousand, six hundred sixty-one".