87573319 has 4 divisors (see below), whose sum is σ = 87600544. Its totient is φ = 87546096.

The previous prime is 87573289. The next prime is 87573347. The reversal of 87573319 is 91337578.

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 87573319 - 2²³ = 79184711 is a prime.

It is a super-2 number, since 2×87573319² = 15338172401351522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87573349) 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, 8022 + ... + 15475.

It is an arithmetic number, because the mean of its divisors is an integer number (21900136).

Almost surely, 2^87573319 is an apocalyptic number.

87573319 is a deficient number, since it is larger than the sum of its proper divisors (27225).

87573319 is a wasteful number, since it uses less digits than its factorization.

87573319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27224.

The product of its digits is 158760, while the sum is 43.

The square root of 87573319 is about 9358.0617117008. The cubic root of 87573319 is about 444.0759666976.

The spelling of 87573319 in words is "eighty-seven million, five hundred seventy-three thousand, three hundred nineteen".