87447807 has 24 divisors (see below), whose sum is σ = 130890240. Its totient is φ = 56201040.

The previous prime is 87447803. The next prime is 87447851. The reversal of 87447807 is 70874478.

It is not a de Polignac number, because 87447807 - 2² = 87447803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87447803) 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 23 ways as a sum of consecutive naturals, for example, 105328 + ... + 106154.

It is an arithmetic number, because the mean of its divisors is an integer number (5453760).

Almost surely, 2^87447807 is an apocalyptic number.

87447807 is a deficient number, since it is larger than the sum of its proper divisors (43442433).

87447807 is a wasteful number, since it uses less digits than its factorization.

87447807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The square root of 87447807 is about 9351.3532175830. The cubic root of 87447807 is about 443.8637121267.

The spelling of 87447807 in words is "eighty-seven million, four hundred forty-seven thousand, eight hundred seven".