87461247 has 8 divisors (see below), whose sum is σ = 116700160. Its totient is φ = 58264920.

The previous prime is 87461221. The next prime is 87461263. The reversal of 87461247 is 74216478.

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

It is not a de Polignac number, because 87461247 - 2⁷ = 87461119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87461207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5497 + ... + 14322.

It is an arithmetic number, because the mean of its divisors is an integer number (14587520).

Almost surely, 2^87461247 is an apocalyptic number.

87461247 is a deficient number, since it is larger than the sum of its proper divisors (29238913).

87461247 is a wasteful number, since it uses less digits than its factorization.

87461247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21293.

The product of its digits is 75264, while the sum is 39.

The square root of 87461247 is about 9352.0718025473. The cubic root of 87461247 is about 443.8864503478.

The spelling of 87461247 in words is "eighty-seven million, four hundred sixty-one thousand, two hundred forty-seven".