87487963 has 6 divisors (see below), whose sum is σ = 87870084. Its totient is φ = 87107184.

The previous prime is 87487949. The next prime is 87487991. The reversal of 87487963 is 36978478.

It is a happy number.

It is not a de Polignac number, because 87487963 - 2⁵ = 87487931 is a prime.

It is the 9354-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87487963.

It is not an unprimeable number, because it can be changed into a prime (87487903) by changing a digit.

It is a nontrivial repunit in base 9353.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167020 + ... + 167542.

It is an arithmetic number, because the mean of its divisors is an integer number (14645014).

Almost surely, 2^87487963 is an apocalyptic number.

87487963 is a deficient number, since it is larger than the sum of its proper divisors (382121).

87487963 is an frugal number, since it uses more digits than its factorization.

87487963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 932 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 52.

The square root of 87487963 is about 9353.5000400919. The cubic root of 87487963 is about 443.9316424130.

The spelling of 87487963 in words is "eighty-seven million, four hundred eighty-seven thousand, nine hundred sixty-three".