87659554 has 4 divisors (see below), whose sum is σ = 131489334. Its totient is φ = 43829776.

The previous prime is 87659503. The next prime is 87659581. The reversal of 87659554 is 45595678.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45595678 = 2 ⋅22797839.

It can be written as a sum of positive squares in only one way, i.e., 84143929 + 3515625 = 9173^2 + 1875^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 87659498 and 87659507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21914887 + ... + 21914890.

Almost surely, 2^87659554 is an apocalyptic number.

87659554 is a deficient number, since it is larger than the sum of its proper divisors (43829780).

87659554 is a wasteful number, since it uses less digits than its factorization.

87659554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43829779.

The product of its digits is 1512000, while the sum is 49.

The square root of 87659554 is about 9362.6681026297. The cubic root of 87659554 is about 444.2216820380.

The spelling of 87659554 in words is "eighty-seven million, six hundred fifty-nine thousand, five hundred fifty-four".