88561719 has 12 divisors (see below), whose sum is σ = 128056656. Its totient is φ = 58979232.

The previous prime is 88561709. The next prime is 88561723. The reversal of 88561719 is 91716588.

88561719 is a `hidden beast` number, since 88 + 561 + 7 + 1 + 9 = 666.

It is not a de Polignac number, because 88561719 - 2⁴ = 88561703 is a prime.

It is a super-2 number, since 2×88561719² = 15686356144469922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88561709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4939 + ... + 14195.

It is an arithmetic number, because the mean of its divisors is an integer number (10671388).

Almost surely, 2^88561719 is an apocalyptic number.

88561719 is a deficient number, since it is larger than the sum of its proper divisors (39494937).

88561719 is a wasteful number, since it uses less digits than its factorization.

88561719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10326 (or 10323 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 88561719 is about 9410.7236172358. The cubic root of 88561719 is about 445.7404144745.

The spelling of 88561719 in words is "eighty-eight million, five hundred sixty-one thousand, seven hundred nineteen".