650778133 has 4 divisors (see below), whose sum is σ = 671771008. Its totient is φ = 629785260.

The previous prime is 650778131. The next prime is 650778151. The reversal of 650778133 is 331877056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 650778133 - 2¹ = 650778131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650778131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10496391 + ... + 10496452.

It is an arithmetic number, because the mean of its divisors is an integer number (167942752).

Almost surely, 2^650778133 is an apocalyptic number.

It is an amenable number.

650778133 is a deficient number, since it is larger than the sum of its proper divisors (20992875).

650778133 is a wasteful number, since it uses less digits than its factorization.

650778133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20992874.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 650778133 is about 25510.3534471790. The cubic root of 650778133 is about 866.5846337707.

The spelling of 650778133 in words is "six hundred fifty million, seven hundred seventy-eight thousand, one hundred thirty-three".