648541387 has 12 divisors (see below), whose sum is σ = 703109424. Its totient is φ = 597935520.

The previous prime is 648541379. The next prime is 648541429. The reversal of 648541387 is 783145846.

It is a happy number.

It is a Wieferich number.

It is not a de Polignac number, because 648541387 - 2³ = 648541379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648541357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182962 + ... + 186472.

It is an arithmetic number, because the mean of its divisors is an integer number (58592452).

Almost surely, 2^648541387 is an apocalyptic number.

648541387 is a deficient number, since it is larger than the sum of its proper divisors (54568037).

648541387 is a wasteful number, since it uses less digits than its factorization.

648541387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630 (or 4617 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 648541387 is about 25466.4757475392. The cubic root of 648541387 is about 865.5906674372.

The spelling of 648541387 in words is "six hundred forty-eight million, five hundred forty-one thousand, three hundred eighty-seven".