88664446693 has 2 divisors, whose sum is σ = 88664446694. Its totient is φ = 88664446692.

The previous prime is 88664446657. The next prime is 88664446697. The reversal of 88664446693 is 39664446688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78076654084 + 10587792609 = 279422^2 + 102897^2 .

It is a cyclic number.

It is not a de Polignac number, because 88664446693 - 2²¹ = 88662349541 is a prime.

It is a super-2 number, since 2×88664446693² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88664446697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44332223346 + 44332223347.

It is an arithmetic number, because the mean of its divisors is an integer number (44332223347).

Almost surely, 2^88664446693 is an apocalyptic number.

It is an amenable number.

88664446693 is a deficient number, since it is larger than the sum of its proper divisors (1).

88664446693 is an equidigital number, since it uses as much as digits as its factorization.

88664446693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 143327232, while the sum is 64.

The spelling of 88664446693 in words is "eighty-eight billion, six hundred sixty-four million, four hundred forty-six thousand, six hundred ninety-three".