87471907 has 4 divisors (see below), whose sum is σ = 87585840. Its totient is φ = 87357976.

The previous prime is 87471899. The next prime is 87471911. The reversal of 87471907 is 70917478.

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

It is a cyclic number.

It is not a de Polignac number, because 87471907 - 2³ = 87471899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87471947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55807 + ... + 57352.

It is an arithmetic number, because the mean of its divisors is an integer number (21896460).

Almost surely, 2^87471907 is an apocalyptic number.

87471907 is a deficient number, since it is larger than the sum of its proper divisors (113933).

87471907 is a wasteful number, since it uses less digits than its factorization.

87471907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113932.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 87471907 is about 9352.6417123720. The cubic root of 87471907 is about 443.9044836197.

The spelling of 87471907 in words is "eighty-seven million, four hundred seventy-one thousand, nine hundred seven".