648379071 has 24 divisors (see below), whose sum is σ = 975074880. Its totient is φ = 414662976.

The previous prime is 648379063. The next prime is 648379073. The reversal of 648379071 is 170973846.

It is not a de Polignac number, because 648379071 - 2³ = 648379063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648379073) 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 23 ways as a sum of consecutive naturals, for example, 33066 + ... + 48888.

It is an arithmetic number, because the mean of its divisors is an integer number (40628120).

Almost surely, 2^648379071 is an apocalyptic number.

648379071 is a deficient number, since it is larger than the sum of its proper divisors (326695809).

648379071 is a wasteful number, since it uses less digits than its factorization.

648379071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16015 (or 16012 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 648379071 is about 25463.2886917617. The cubic root of 648379071 is about 865.5184484852.

The spelling of 648379071 in words is "six hundred forty-eight million, three hundred seventy-nine thousand, seventy-one".