88655689 has 4 divisors (see below), whose sum is σ = 88720020. Its totient is φ = 88591360.

The previous prime is 88655687. The next prime is 88655711. The reversal of 88655689 is 98655688.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20097289 + 68558400 = 4483^2 + 8280^2 .

It is a cyclic number.

It is not a de Polignac number, because 88655689 - 2¹ = 88655687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88655681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30052 + ... + 32869.

It is an arithmetic number, because the mean of its divisors is an integer number (22180005).

Almost surely, 2^88655689 is an apocalyptic number.

It is an amenable number.

88655689 is a deficient number, since it is larger than the sum of its proper divisors (64331).

88655689 is a wasteful number, since it uses less digits than its factorization.

88655689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64330.

The product of its digits is 4147200, while the sum is 55.

The square root of 88655689 is about 9415.7150020591. The cubic root of 88655689 is about 445.8980123668.

Subtracting 88655689 from its reverse (98655688), we obtain a palindrome (9999999).

The spelling of 88655689 in words is "eighty-eight million, six hundred fifty-five thousand, six hundred eighty-nine".