87047763 has 24 divisors (see below), whose sum is σ = 131989200. Its totient is φ = 50930880.

The previous prime is 87047761. The next prime is 87047771. The reversal of 87047763 is 36774078.

It is not a de Polignac number, because 87047763 - 2¹ = 87047761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87047761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6393 + ... + 14661.

It is an arithmetic number, because the mean of its divisors is an integer number (5499550).

Almost surely, 2^87047763 is an apocalyptic number.

87047763 is a deficient number, since it is larger than the sum of its proper divisors (44941437).

87047763 is a wasteful number, since it uses less digits than its factorization.

87047763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323 (or 8312 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 87047763 is about 9329.9390673251. The cubic root of 87047763 is about 443.1858355062.

It can be divided in two parts, 870477 and 63, that added together give a triangular number (870540 = T₁₃₁₉).

The spelling of 87047763 in words is "eighty-seven million, forty-seven thousand, seven hundred sixty-three".