649694162 has 24 divisors (see below), whose sum is σ = 1064710668. Its totient is φ = 295575840.

The previous prime is 649694131. The next prime is 649694167. The reversal of 649694162 is 261496946.

It can be written as a sum of positive squares in 2 ways, for example, as 649689121 + 5041 = 25489^2 + 71^2 .

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (649694167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128588 + ... + 133544.

Almost surely, 2^649694162 is an apocalyptic number.

649694162 is a deficient number, since it is larger than the sum of its proper divisors (415016506).

649694162 is a wasteful number, since it uses less digits than its factorization.

649694162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114 (or 5043 counting only the distinct ones).

The product of its digits is 559872, while the sum is 47.

The square root of 649694162 is about 25489.0988856021. The cubic root of 649694162 is about 866.1032230856.

The spelling of 649694162 in words is "six hundred forty-nine million, six hundred ninety-four thousand, one hundred sixty-two".