648279205 has 32 divisors (see below), whose sum is σ = 900440064. Its totient is φ = 438890496.

The previous prime is 648279133. The next prime is 648279209. The reversal of 648279205 is 502972846.

It is a cyclic number.

It is not a de Polignac number, because 648279205 - 2⁹ = 648278693 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 (648279209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1692444 + ... + 1692826.

It is an arithmetic number, because the mean of its divisors is an integer number (28138752).

Almost surely, 2^648279205 is an apocalyptic number.

It is an amenable number.

648279205 is a deficient number, since it is larger than the sum of its proper divisors (252160859).

648279205 is a wasteful number, since it uses less digits than its factorization.

648279205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 648279205 is about 25461.3276362408. The cubic root of 648279205 is about 865.4740093049.

The spelling of 648279205 in words is "six hundred forty-eight million, two hundred seventy-nine thousand, two hundred five".