7216637677 has 2 divisors, whose sum is σ = 7216637678. Its totient is φ = 7216637676.

The previous prime is 7216637671. The next prime is 7216637767. The reversal of 7216637677 is 7767366127.

Together with next prime (7216637767) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5675211556 + 1541426121 = 75334^2 + 39261^2 .

It is an emirp because it is prime and its reverse (7767366127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7216637677 - 2¹⁹ = 7216113389 is a prime.

It is a super-2 number, since 2×7216637677² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7216637671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3608318838 + 3608318839.

It is an arithmetic number, because the mean of its divisors is an integer number (3608318839).

Almost surely, 2^7216637677 is an apocalyptic number.

It is an amenable number.

7216637677 is a deficient number, since it is larger than the sum of its proper divisors (1).

7216637677 is an equidigital number, since it uses as much as digits as its factorization.

7216637677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3111696, while the sum is 52.

The square root of 7216637677 is about 84950.7956231135. The cubic root of 7216637677 is about 1932.4649861808.

The spelling of 7216637677 in words is "seven billion, two hundred sixteen million, six hundred thirty-seven thousand, six hundred seventy-seven".