648537587 has 4 divisors (see below), whose sum is σ = 653271576. Its totient is φ = 643803600.

The previous prime is 648537563. The next prime is 648537611. The reversal of 648537587 is 785735846.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (648537563) and next prime (648537611).

It is a cyclic number.

It is not a de Polignac number, because 648537587 - 2¹² = 648533491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648537557) 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, 2366789 + ... + 2367062.

It is an arithmetic number, because the mean of its divisors is an integer number (163317894).

Almost surely, 2^648537587 is an apocalyptic number.

648537587 is a deficient number, since it is larger than the sum of its proper divisors (4733989).

648537587 is a wasteful number, since it uses less digits than its factorization.

648537587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4733988.

The product of its digits is 5644800, while the sum is 53.

The square root of 648537587 is about 25466.4011395407. The cubic root of 648537587 is about 865.5889768481.

The spelling of 648537587 in words is "six hundred forty-eight million, five hundred thirty-seven thousand, five hundred eighty-seven".