87050013 has 8 divisors (see below), whose sum is σ = 122894208. Its totient is φ = 54619584.

The previous prime is 87050003. The next prime is 87050053. The reversal of 87050013 is 31005078.

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

It is not a de Polignac number, because 87050013 - 2²⁰ = 86001437 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87050003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853381 + ... + 853482.

It is an arithmetic number, because the mean of its divisors is an integer number (15361776).

Almost surely, 2^87050013 is an apocalyptic number.

It is an amenable number.

87050013 is a deficient number, since it is larger than the sum of its proper divisors (35844195).

87050013 is a wasteful number, since it uses less digits than its factorization.

87050013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706883.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 87050013 is about 9330.0596461116. The cubic root of 87050013 is about 443.1896539445.

The spelling of 87050013 in words is "eighty-seven million, fifty thousand, thirteen".