88665749 has 2 divisors, whose sum is σ = 88665750. Its totient is φ = 88665748.

The previous prime is 88665719. The next prime is 88665791. The reversal of 88665749 is 94756688.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88548100 + 117649 = 9410^2 + 343^2 .

It is a cyclic number.

It is not a de Polignac number, because 88665749 - 2¹² = 88661653 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 88665749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88665719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44332874 + 44332875.

It is an arithmetic number, because the mean of its divisors is an integer number (44332875).

Almost surely, 2^88665749 is an apocalyptic number.

It is an amenable number.

88665749 is a deficient number, since it is larger than the sum of its proper divisors (1).

88665749 is an equidigital number, since it uses as much as digits as its factorization.

88665749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The square root of 88665749 is about 9416.2492001858. The cubic root of 88665749 is about 445.9148774787.

The spelling of 88665749 in words is "eighty-eight million, six hundred sixty-five thousand, seven hundred forty-nine".