648378054 has 32 divisors (see below), whose sum is σ = 1441680480. Its totient is φ = 216000000.

The previous prime is 648378041. The next prime is 648378061. The reversal of 648378054 is 450873846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160054 + ... + 164054.

It is an arithmetic number, because the mean of its divisors is an integer number (45052515).

Almost surely, 2^648378054 is an apocalyptic number.

648378054 is an abundant number, since it is smaller than the sum of its proper divisors (793302426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648378054 is a wasteful number, since it uses less digits than its factorization.

648378054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013 (or 7007 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 648378054 is about 25463.2687218275. The cubic root of 648378054 is about 865.5179959554.

The spelling of 648378054 in words is "six hundred forty-eight million, three hundred seventy-eight thousand, fifty-four".