87858901 has 4 divisors (see below), whose sum is σ = 94617292. Its totient is φ = 81100512.

The previous prime is 87858899. The next prime is 87858937. The reversal of 87858901 is 10985878.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10985878 = 2 ⋅5492939.

It can be written as a sum of positive squares in 2 ways, for example, as 11383876 + 76475025 = 3374^2 + 8745^2 .

It is a cyclic number.

It is not a de Polignac number, because 87858901 - 2¹ = 87858899 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87858961) 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, 3379176 + ... + 3379201.

It is an arithmetic number, because the mean of its divisors is an integer number (23654323).

Almost surely, 2^87858901 is an apocalyptic number.

It is an amenable number.

87858901 is a deficient number, since it is larger than the sum of its proper divisors (6758391).

87858901 is a wasteful number, since it uses less digits than its factorization.

87858901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6758390.

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 87858901 is about 9373.3079006293. The cubic root of 87858901 is about 444.5581626347.

The spelling of 87858901 in words is "eighty-seven million, eight hundred fifty-eight thousand, nine hundred one".