88621609 has 4 divisors (see below), whose sum is σ = 88889680. Its totient is φ = 88353540.

The previous prime is 88621597. The next prime is 88621613. The reversal of 88621609 is 90612688.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88621609 - 2²¹ = 86524457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88621639) 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, 133539 + ... + 134200.

It is an arithmetic number, because the mean of its divisors is an integer number (22222420).

Almost surely, 2^88621609 is an apocalyptic number.

It is an amenable number.

88621609 is a deficient number, since it is larger than the sum of its proper divisors (268071).

88621609 is a wasteful number, since it uses less digits than its factorization.

88621609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268070.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 88621609 is about 9413.9050876881. The cubic root of 88621609 is about 445.8408693828.

The spelling of 88621609 in words is "eighty-eight million, six hundred twenty-one thousand, six hundred nine".