649290611 has 4 divisors (see below), whose sum is σ = 650165232. Its totient is φ = 648415992.

The previous prime is 649290581. The next prime is 649290619. The reversal of 649290611 is 116092946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116092946 = 2 ⋅58046473.

It is a cyclic number.

It is not a de Polignac number, because 649290611 - 2⁶ = 649290547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649290619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436196 + ... + 437681.

It is an arithmetic number, because the mean of its divisors is an integer number (162541308).

Almost surely, 2^649290611 is an apocalyptic number.

649290611 is a deficient number, since it is larger than the sum of its proper divisors (874621).

649290611 is an equidigital number, since it uses as much as digits as its factorization.

649290611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874620.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 649290611 is about 25481.1815071437. The cubic root of 649290611 is about 865.9238621732.

The spelling of 649290611 in words is "six hundred forty-nine million, two hundred ninety thousand, six hundred eleven".