87373717 has 4 divisors (see below), whose sum is σ = 90192256. Its totient is φ = 84555180.

The previous prime is 87373709. The next prime is 87373729. The reversal of 87373717 is 71737378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71737378 = 2 ⋅35868689.

It is a cyclic number.

It is not a de Polignac number, because 87373717 - 2³ = 87373709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87373417) 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, 1409223 + ... + 1409284.

It is an arithmetic number, because the mean of its divisors is an integer number (22548064).

Almost surely, 2^87373717 is an apocalyptic number.

It is an amenable number.

87373717 is a deficient number, since it is larger than the sum of its proper divisors (2818539).

87373717 is a wasteful number, since it uses less digits than its factorization.

87373717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818538.

The product of its digits is 172872, while the sum is 43.

The square root of 87373717 is about 9347.3909193956. The cubic root of 87373717 is about 443.7383224593.

It can be divided in two parts, 8737371 and 7, that added together give a palindrome (8737378).

The spelling of 87373717 in words is "eighty-seven million, three hundred seventy-three thousand, seven hundred seventeen".