973688663 has 2 divisors, whose sum is σ = 973688664. Its totient is φ = 973688662.

The previous prime is 973688591. The next prime is 973688671. The reversal of 973688663 is 366886379.

It is a strong prime.

It is an emirp because it is prime and its reverse (366886379) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 973688663 - 2¹⁶ = 973623127 is a prime.

It is a super-2 number, since 2×973688663² = 1896139224909455138, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 973688599 and 973688608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (973688563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486844331 + 486844332.

It is an arithmetic number, because the mean of its divisors is an integer number (486844332).

Almost surely, 2^973688663 is an apocalyptic number.

973688663 is a deficient number, since it is larger than the sum of its proper divisors (1).

973688663 is an equidigital number, since it uses as much as digits as its factorization.

973688663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 56.

The square root of 973688663 is about 31203.9847295181. The cubic root of 973688663 is about 991.1514891234.

The spelling of 973688663 in words is "nine hundred seventy-three million, six hundred eighty-eight thousand, six hundred sixty-three".