648893774 has 16 divisors (see below), whose sum is σ = 1033010496. Its totient is φ = 304646400.

The previous prime is 648893771. The next prime is 648893809. The reversal of 648893774 is 477398846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648893771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7487 + ... + 36794.

It is an arithmetic number, because the mean of its divisors is an integer number (64563156).

Almost surely, 2^648893774 is an apocalyptic number.

648893774 is a deficient number, since it is larger than the sum of its proper divisors (384116722).

648893774 is a wasteful number, since it uses less digits than its factorization.

648893774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44731.

The product of its digits is 8128512, while the sum is 56.

The square root of 648893774 is about 25473.3934527774. The cubic root of 648893774 is about 865.7474128540.

The spelling of 648893774 in words is "six hundred forty-eight million, eight hundred ninety-three thousand, seven hundred seventy-four".