87633545 has 4 divisors (see below), whose sum is σ = 105160260. Its totient is φ = 70106832.

The previous prime is 87633509. The next prime is 87633547. The reversal of 87633545 is 54533678.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54582544 + 33051001 = 7388^2 + 5749^2 .

It is a cyclic number.

It is not a de Polignac number, because 87633545 - 2¹² = 87629449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87633547) 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 3 ways as a sum of consecutive naturals, for example, 8763350 + ... + 8763359.

It is an arithmetic number, because the mean of its divisors is an integer number (26290065).

Almost surely, 2^87633545 is an apocalyptic number.

It is an amenable number.

87633545 is a deficient number, since it is larger than the sum of its proper divisors (17526715).

87633545 is a wasteful number, since it uses less digits than its factorization.

87633545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17526714.

The product of its digits is 302400, while the sum is 41.

The square root of 87633545 is about 9361.2790258597. The cubic root of 87633545 is about 444.1777434746.

The spelling of 87633545 in words is "eighty-seven million, six hundred thirty-three thousand, five hundred forty-five".