649506224 has 10 divisors (see below), whose sum is σ = 1258418340. Its totient is φ = 324753104.

The previous prime is 649506217. The next prime is 649506281. The reversal of 649506224 is 422605946.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20297054 + ... + 20297085.

It is an arithmetic number, because the mean of its divisors is an integer number (125841834).

Almost surely, 2^649506224 is an apocalyptic number.

It is an amenable number.

649506224 is a deficient number, since it is larger than the sum of its proper divisors (608912116).

649506224 is a wasteful number, since it uses less digits than its factorization.

649506224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40594147 (or 40594141 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 649506224 is about 25485.4119841136. The cubic root of 649506224 is about 866.0197020410.

The spelling of 649506224 in words is "six hundred forty-nine million, five hundred six thousand, two hundred twenty-four".