648102487 has 4 divisors (see below), whose sum is σ = 676280880. Its totient is φ = 619924096.

The previous prime is 648102467. The next prime is 648102503. The reversal of 648102487 is 784201846.

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 648102487 - 2⁷ = 648102359 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 (648102467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14089162 + ... + 14089207.

It is an arithmetic number, because the mean of its divisors is an integer number (169070220).

Almost surely, 2^648102487 is an apocalyptic number.

648102487 is a deficient number, since it is larger than the sum of its proper divisors (28178393).

648102487 is a wasteful number, since it uses less digits than its factorization.

648102487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28178392.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 648102487 is about 25457.8570779239. The cubic root of 648102487 is about 865.3953607153.

The spelling of 648102487 in words is "six hundred forty-eight million, one hundred two thousand, four hundred eighty-seven".