649536196 has 9 divisors (see below), whose sum is σ = 1136777551. Its totient is φ = 324742612.

The previous prime is 649536179. The next prime is 649536233. The reversal of 649536196 is 691635946.

The square root of 649536196 is 25486.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 44601 + ... + 57343.

Almost surely, 2^649536196 is an apocalyptic number.

649536196 is the 25486-th square number.

It is an amenable number.

649536196 is a deficient number, since it is larger than the sum of its proper divisors (487241355).

649536196 is an frugal number, since it uses more digits than its factorization.

649536196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25490 (or 12745 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 49.

The cubic root of 649536196 is about 866.0330229004.

Multiplying 649536196 by its sum of digits (49), we get a square (31827273604 = 178402²).

The spelling of 649536196 in words is "six hundred forty-nine million, five hundred thirty-six thousand, one hundred ninety-six".