648893436 has 12 divisors (see below), whose sum is σ = 1514084712. Its totient is φ = 216297808.

The previous prime is 648893407. The next prime is 648893449. The reversal of 648893436 is 634398846.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27037215 + ... + 27037238.

It is an arithmetic number, because the mean of its divisors is an integer number (126173726).

Almost surely, 2^648893436 is an apocalyptic number.

It is an amenable number.

648893436 is an abundant number, since it is smaller than the sum of its proper divisors (865191276).

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

648893436 is a wasteful number, since it uses less digits than its factorization.

648893436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54074460 (or 54074458 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 51.

The square root of 648893436 is about 25473.3868184032. The cubic root of 648893436 is about 865.7472625353.

The spelling of 648893436 in words is "six hundred forty-eight million, eight hundred ninety-three thousand, four hundred thirty-six".