87340521 has 8 divisors (see below), whose sum is σ = 116513280. Its totient is φ = 58197392.

The previous prime is 87340483. The next prime is 87340529. The reversal of 87340521 is 12504378.

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

It is a cyclic number.

It is not a de Polignac number, because 87340521 - 2²⁶ = 20231657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87340529) 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, 760 + ... + 13238.

It is an arithmetic number, because the mean of its divisors is an integer number (14564160).

Almost surely, 2^87340521 is an apocalyptic number.

It is an amenable number.

87340521 is a deficient number, since it is larger than the sum of its proper divisors (29172759).

87340521 is a wasteful number, since it uses less digits than its factorization.

87340521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14815.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 87340521 is about 9345.6150680413. The cubic root of 87340521 is about 443.6821186651.

Adding to 87340521 its reverse (12504378), we get a palindrome (99844899).

The spelling of 87340521 in words is "eighty-seven million, three hundred forty thousand, five hundred twenty-one".