88772861 has 4 divisors (see below), whose sum is σ = 93994812. Its totient is φ = 83550912.

The previous prime is 88772843. The next prime is 88772867. The reversal of 88772861 is 16827788.

It is a happy number.

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 74476900 + 14295961 = 8630^2 + 3781^2 .

It is a cyclic number.

It is not a de Polignac number, because 88772861 - 2⁶ = 88772797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88772867) 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, 2610950 + ... + 2610983.

It is an arithmetic number, because the mean of its divisors is an integer number (23498703).

Almost surely, 2^88772861 is an apocalyptic number.

It is an amenable number.

88772861 is a deficient number, since it is larger than the sum of its proper divisors (5221951).

88772861 is a wasteful number, since it uses less digits than its factorization.

88772861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221950.

The product of its digits is 301056, while the sum is 47.

The square root of 88772861 is about 9421.9350984816. The cubic root of 88772861 is about 446.0943666073.

The spelling of 88772861 in words is "eighty-eight million, seven hundred seventy-two thousand, eight hundred sixty-one".