649612965 has 16 divisors (see below), whose sum is σ = 1044827136. Its totient is φ = 344644800.

The previous prime is 649612961. The next prime is 649612969. The reversal of 649612965 is 569216946.

649612965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (649612961) and next prime (649612969).

It is not a de Polignac number, because 649612965 - 2² = 649612961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649612961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110506 + ... + 116235.

It is an arithmetic number, because the mean of its divisors is an integer number (65301696).

Almost surely, 2^649612965 is an apocalyptic number.

It is an amenable number.

649612965 is a deficient number, since it is larger than the sum of its proper divisors (395214171).

649612965 is a wasteful number, since it uses less digits than its factorization.

649612965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226940.

The product of its digits is 699840, while the sum is 48.

The square root of 649612965 is about 25487.5060568899. The cubic root of 649612965 is about 866.0671405115.

The spelling of 649612965 in words is "six hundred forty-nine million, six hundred twelve thousand, nine hundred sixty-five".