648688047 has 16 divisors (see below), whose sum is σ = 994778112. Its totient is φ = 368316000.

The previous prime is 648687967. The next prime is 648688069. The reversal of 648688047 is 740886846.

It is not a de Polignac number, because 648688047 - 2¹² = 648683951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648687047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95079 + ... + 101672.

It is an arithmetic number, because the mean of its divisors is an integer number (62173632).

Almost surely, 2^648688047 is an apocalyptic number.

648688047 is a deficient number, since it is larger than the sum of its proper divisors (346090065).

648688047 is a wasteful number, since it uses less digits than its factorization.

648688047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196918.

The product of its (nonzero) digits is 2064384, while the sum is 51.

The square root of 648688047 is about 25469.3550566166. The cubic root of 648688047 is about 865.6559102327.

The spelling of 648688047 in words is "six hundred forty-eight million, six hundred eighty-eight thousand, forty-seven".