87463538 has 18 divisors (see below), whose sum is σ = 139725831. Its totient is φ = 41053504.

The previous prime is 87463531. The next prime is 87463553. The reversal of 87463538 is 83536478.

It can be written as a sum of positive squares in 5 ways, for example, as 45252529 + 42211009 = 6727^2 + 6497^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6613.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87463531) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 224648 + ... + 225036.

Almost surely, 2^87463538 is an apocalyptic number.

87463538 is a deficient number, since it is larger than the sum of its proper divisors (52262293).

87463538 is an equidigital number, since it uses as much as digits as its factorization.

87463538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814 (or 408 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The square root of 87463538 is about 9352.1942879733. The cubic root of 87463538 is about 443.8903261023.

The spelling of 87463538 in words is "eighty-seven million, four hundred sixty-three thousand, five hundred thirty-eight".