648056454 has 16 divisors (see below), whose sum is σ = 1296370992. Its totient is φ = 215975808.

The previous prime is 648056429. The next prime is 648056477. The reversal of 648056454 is 454650846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41202 + ... + 54714.

It is an arithmetic number, because the mean of its divisors is an integer number (81023187).

Almost surely, 2^648056454 is an apocalyptic number.

648056454 is an abundant number, since it is smaller than the sum of its proper divisors (648314538).

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

648056454 is a wasteful number, since it uses less digits than its factorization.

648056454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21511.

The product of its (nonzero) digits is 460800, while the sum is 42.

The square root of 648056454 is about 25456.9529598497. The cubic root of 648056454 is about 865.3748713181.

The spelling of 648056454 in words is "six hundred forty-eight million, fifty-six thousand, four hundred fifty-four".