7215342587 has 4 divisors (see below), whose sum is σ = 7595097480. Its totient is φ = 6835587696.

The previous prime is 7215342559. The next prime is 7215342599. The reversal of 7215342587 is 7852435127.

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 7215342587 - 2¹⁸ = 7215080443 is a prime.

It is a super-2 number, since 2×7215342587² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7215342517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189877418 + ... + 189877455.

It is an arithmetic number, because the mean of its divisors is an integer number (1898774370).

Almost surely, 2^7215342587 is an apocalyptic number.

7215342587 is a deficient number, since it is larger than the sum of its proper divisors (379754893).

7215342587 is a wasteful number, since it uses less digits than its factorization.

7215342587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379754892.

The product of its digits is 470400, while the sum is 44.

The square root of 7215342587 is about 84943.1726921005. The cubic root of 7215342587 is about 1932.3493799055.

The spelling of 7215342587 in words is "seven billion, two hundred fifteen million, three hundred forty-two thousand, five hundred eighty-seven".