649122707 has 4 divisors (see below), whose sum is σ = 683287080. Its totient is φ = 614958336.

The previous prime is 649122647. The next prime is 649122731. The reversal of 649122707 is 707221946.

649122707 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 is a cyclic number.

It is not a de Polignac number, because 649122707 - 2¹² = 649118611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649122007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17082158 + ... + 17082195.

It is an arithmetic number, because the mean of its divisors is an integer number (170821770).

Almost surely, 2^649122707 is an apocalyptic number.

649122707 is a deficient number, since it is larger than the sum of its proper divisors (34164373).

649122707 is a wasteful number, since it uses less digits than its factorization.

649122707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34164372.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 649122707 is about 25477.8866274265. The cubic root of 649122707 is about 865.8492142359.

The spelling of 649122707 in words is "six hundred forty-nine million, one hundred twenty-two thousand, seven hundred seven".