88887581 has 8 divisors (see below), whose sum is σ = 92618400. Its totient is φ = 85201200.

The previous prime is 88887569. The next prime is 88887613. The reversal of 88887581 is 18578888.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 88887581 - 2⁶ = 88887517 is a prime.

It is a super-2 number, since 2×88887581² = 15802004112063122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88883581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6995 + ... + 15056.

It is an arithmetic number, because the mean of its divisors is an integer number (11577300).

Almost surely, 2^88887581 is an apocalyptic number.

It is an amenable number.

88887581 is a deficient number, since it is larger than the sum of its proper divisors (3730819).

88887581 is a wasteful number, since it uses less digits than its factorization.

88887581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22219.

The product of its digits is 1146880, while the sum is 53.

The square root of 88887581 is about 9428.0210542828. The cubic root of 88887581 is about 446.2864445176.

The spelling of 88887581 in words is "eighty-eight million, eight hundred eighty-seven thousand, five hundred eighty-one".