87605263 has 4 divisors (see below), whose sum is σ = 87625048. Its totient is φ = 87585480.

The previous prime is 87605261. The next prime is 87605291. The reversal of 87605263 is 36250678.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36250678 = 2 ⋅18125339.

It is a cyclic number.

It is not a de Polignac number, because 87605263 - 2¹ = 87605261 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 (87605261) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 145 + ... + 13237.

It is an arithmetic number, because the mean of its divisors is an integer number (21906262).

Almost surely, 2^87605263 is an apocalyptic number.

87605263 is a deficient number, since it is larger than the sum of its proper divisors (19785).

87605263 is a wasteful number, since it uses less digits than its factorization.

87605263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19784.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 87605263 is about 9359.7683197823. The cubic root of 87605263 is about 444.1299551283.

The spelling of 87605263 in words is "eighty-seven million, six hundred five thousand, two hundred sixty-three".