649707946 has 4 divisors (see below), whose sum is σ = 974561922. Its totient is φ = 324853972.

The previous prime is 649707943. The next prime is 649708001.

649707946 is nontrivially palindromic in base 10.

649707946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 438441721 + 211266225 = 20939^2 + 14535^2 .

It is a junction number, because it is equal to n+sod(n) for n = 649707893 and 649707902.

It is not an unprimeable number, because it can be changed into a prime (649707943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162426985 + ... + 162426988.

Almost surely, 2^649707946 is an apocalyptic number.

649707946 is a deficient number, since it is larger than the sum of its proper divisors (324853976).

649707946 is a wasteful number, since it uses less digits than its factorization.

649707946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324853975.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The square root of 649707946 is about 25489.3692742680. The cubic root of 649707946 is about 866.1093481637.

The spelling of 649707946 in words is "six hundred forty-nine million, seven hundred seven thousand, nine hundred forty-six".