648591196 has 24 divisors (see below), whose sum is σ = 1239194880. Its totient is φ = 294582000.

The previous prime is 648591187. The next prime is 648591247. The reversal of 648591196 is 691195846.

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, 58765 + ... + 68923.

It is an arithmetic number, because the mean of its divisors is an integer number (51633120).

Almost surely, 2^648591196 is an apocalyptic number.

It is an amenable number.

648591196 is a deficient number, since it is larger than the sum of its proper divisors (590603684).

648591196 is a wasteful number, since it uses less digits than its factorization.

648591196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11625 (or 11623 counting only the distinct ones).

The product of its digits is 466560, while the sum is 49.

The square root of 648591196 is about 25467.4536614872. The cubic root of 648591196 is about 865.6128264454.

The spelling of 648591196 in words is "six hundred forty-eight million, five hundred ninety-one thousand, one hundred ninety-six".