649700352 has 264 divisors, whose sum is σ = 2229363136. Its totient is φ = 185131008.

The previous prime is 649700351. The next prime is 649700399. The reversal of 649700352 is 253007946.

649700352 is a `hidden beast` number, since 649 + 7 + 0 + 0 + 3 + 5 + 2 = 666.

It is a super-2 number, since 2×649700352² = 844221094777847808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (649700351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1741638 + ... + 1742010.

Almost surely, 2^649700352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649700352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1114681568).

649700352 is an abundant number, since it is smaller than the sum of its proper divisors (1579662784).

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

649700352 is an equidigital number, since it uses as much as digits as its factorization.

649700352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 649700352 is about 25489.2203097702. The cubic root of 649700352 is about 866.1059736936.

The spelling of 649700352 in words is "six hundred forty-nine million, seven hundred thousand, three hundred fifty-two".