649341772 has 12 divisors (see below), whose sum is σ = 1136529520. Its totient is φ = 324619056.

The previous prime is 649341713. The next prime is 649341793. The reversal of 649341772 is 277143946.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 34729 + ... + 50047.

Almost surely, 2^649341772 is an apocalyptic number.

It is an amenable number.

649341772 is a deficient number, since it is larger than the sum of its proper divisors (487187748).

649341772 is a wasteful number, since it uses less digits than its factorization.

649341772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25920 (or 25918 counting only the distinct ones).

The product of its digits is 254016, while the sum is 43.

The square root of 649341772 is about 25482.1853850881. The cubic root of 649341772 is about 865.9466051312.

The spelling of 649341772 in words is "six hundred forty-nine million, three hundred forty-one thousand, seven hundred seventy-two".