88636609 has 2 divisors, whose sum is σ = 88636610. Its totient is φ = 88636608.

The previous prime is 88636607. The next prime is 88636633. The reversal of 88636609 is 90663688.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45603009 + 43033600 = 6753^2 + 6560^2 .

It is a cyclic number.

It is not a de Polignac number, because 88636609 - 2¹ = 88636607 is a prime.

Together with 88636607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (88636607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44318304 + 44318305.

It is an arithmetic number, because the mean of its divisors is an integer number (44318305).

Almost surely, 2^88636609 is an apocalyptic number.

It is an amenable number.

88636609 is a deficient number, since it is larger than the sum of its proper divisors (1).

88636609 is an equidigital number, since it uses as much as digits as its factorization.

88636609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 88636609 is about 9414.7017477985. The cubic root of 88636609 is about 445.8660221487.

The spelling of 88636609 in words is "eighty-eight million, six hundred thirty-six thousand, six hundred nine".