87710101 has 4 divisors (see below), whose sum is σ = 87766092. Its totient is φ = 87654112.

The previous prime is 87710093. The next prime is 87710107. The reversal of 87710101 is 10101778.

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 66096900 + 21613201 = 8130^2 + 4649^2 .

It is a cyclic number.

It is not a de Polignac number, because 87710101 - 2³ = 87710093 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 (87710107) 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, 25576 + ... + 28801.

It is an arithmetic number, because the mean of its divisors is an integer number (21941523).

Almost surely, 2^87710101 is an apocalyptic number.

It is an amenable number.

87710101 is a deficient number, since it is larger than the sum of its proper divisors (55991).

87710101 is a wasteful number, since it uses less digits than its factorization.

87710101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55990.

The product of its (nonzero) digits is 392, while the sum is 25.

The square root of 87710101 is about 9365.3671043905. The cubic root of 87710101 is about 444.3070492639.

Adding to 87710101 its reverse (10101778), we get a palindrome (97811879).

The spelling of 87710101 in words is "eighty-seven million, seven hundred ten thousand, one hundred one".