87100634 has 4 divisors (see below), whose sum is σ = 130650954. Its totient is φ = 43550316.

The previous prime is 87100633. The next prime is 87100667. The reversal of 87100634 is 43600178.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43600178 = 2 ⋅21800089.

It can be written as a sum of positive squares in only one way, i.e., 58446025 + 28654609 = 7645^2 + 5353^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87100597 and 87100606.

It is not an unprimeable number, because it can be changed into a prime (87100633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21775157 + ... + 21775160.

Almost surely, 2^87100634 is an apocalyptic number.

87100634 is a deficient number, since it is larger than the sum of its proper divisors (43550320).

87100634 is a wasteful number, since it uses less digits than its factorization.

87100634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43550319.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 87100634 is about 9332.7720426463. The cubic root of 87100634 is about 443.2755446312.

The spelling of 87100634 in words is "eighty-seven million, one hundred thousand, six hundred thirty-four".