87263751 has 8 divisors (see below), whose sum is σ = 122475520. Its totient is φ = 55113912.

The previous prime is 87263719. The next prime is 87263767. The reversal of 87263751 is 15736278.

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

It is not a de Polignac number, because 87263751 - 2⁵ = 87263719 is a prime.

It is a super-2 number, since 2×87263751² = 15229924477180002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87263651) 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, 765415 + ... + 765528.

It is an arithmetic number, because the mean of its divisors is an integer number (15309440).

Almost surely, 2^87263751 is an apocalyptic number.

87263751 is a deficient number, since it is larger than the sum of its proper divisors (35211769).

87263751 is a wasteful number, since it uses less digits than its factorization.

87263751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530965.

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

The square root of 87263751 is about 9341.5068912890. The cubic root of 87263751 is about 443.5520856233.

The spelling of 87263751 in words is "eighty-seven million, two hundred sixty-three thousand, seven hundred fifty-one".