87751263 has 8 divisors (see below), whose sum is σ = 123884208. Its totient is φ = 55059584.

The previous prime is 87751259. The next prime is 87751273. The reversal of 87751263 is 36215778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87751263 - 2² = 87751259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87751273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860256 + ... + 860357.

It is an arithmetic number, because the mean of its divisors is an integer number (15485526).

Almost surely, 2^87751263 is an apocalyptic number.

87751263 is a deficient number, since it is larger than the sum of its proper divisors (36132945).

87751263 is a wasteful number, since it uses less digits than its factorization.

87751263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720633.

The product of its digits is 70560, while the sum is 39.

The square root of 87751263 is about 9367.5644113078. The cubic root of 87751263 is about 444.3765422352.

The spelling of 87751263 in words is "eighty-seven million, seven hundred fifty-one thousand, two hundred sixty-three".