88681693 has 2 divisors, whose sum is σ = 88681694. Its totient is φ = 88681692.

The previous prime is 88681679. The next prime is 88681751. The reversal of 88681693 is 39618688.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88397604 + 284089 = 9402^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 88681693 - 2⁹ = 88681181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88681643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44340846 + 44340847.

It is an arithmetic number, because the mean of its divisors is an integer number (44340847).

Almost surely, 2^88681693 is an apocalyptic number.

It is an amenable number.

88681693 is a deficient number, since it is larger than the sum of its proper divisors (1).

88681693 is an equidigital number, since it uses as much as digits as its factorization.

88681693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 49.

The square root of 88681693 is about 9417.0957837329. The cubic root of 88681693 is about 445.9416042241.

The spelling of 88681693 in words is "eighty-eight million, six hundred eighty-one thousand, six hundred ninety-three".