87485013 has 24 divisors (see below), whose sum is σ = 157550016. Its totient is φ = 45446400.

The previous prime is 87485011. The next prime is 87485017. The reversal of 87485013 is 31058478.

It is not a de Polignac number, because 87485013 - 2¹ = 87485011 is a prime.

It is a super-2 number, since 2×87485013² = 15307254999220338, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87485011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62428 + ... + 63813.

It is an arithmetic number, because the mean of its divisors is an integer number (6564584).

Almost surely, 2^87485013 is an apocalyptic number.

It is an amenable number.

87485013 is a deficient number, since it is larger than the sum of its proper divisors (70065003).

87485013 is a wasteful number, since it uses less digits than its factorization.

87485013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126265 (or 126262 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 87485013 is about 9353.3423437828. The cubic root of 87485013 is about 443.9266527245.

The spelling of 87485013 in words is "eighty-seven million, four hundred eighty-five thousand, thirteen".