649694352 has 40 divisors (see below), whose sum is σ = 1710051264. Its totient is φ = 212477824.

The previous prime is 649694351. The next prime is 649694387. The reversal of 649694352 is 253496946.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (649694351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125148 + ... + 130235.

Almost surely, 2^649694352 is an apocalyptic number.

It is an amenable number.

649694352 is an abundant number, since it is smaller than the sum of its proper divisors (1060356912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649694352 is a wasteful number, since it uses less digits than its factorization.

649694352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255447 (or 255441 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 48.

The square root of 649694352 is about 25489.1026126853. The cubic root of 649694352 is about 866.1033075149.

The spelling of 649694352 in words is "six hundred forty-nine million, six hundred ninety-four thousand, three hundred fifty-two".