650777620 has 12 divisors (see below), whose sum is σ = 1366633044. Its totient is φ = 260311040.

The previous prime is 650777599. The next prime is 650777627. The reversal of 650777620 is 26777056.

It can be written as a sum of positive squares in 2 ways, for example, as 112444816 + 538332804 = 10604^2 + 23202^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650777627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16269421 + ... + 16269460.

It is an arithmetic number, because the mean of its divisors is an integer number (113886087).

Almost surely, 2^650777620 is an apocalyptic number.

It is an amenable number.

650777620 is an abundant number, since it is smaller than the sum of its proper divisors (715855424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

650777620 is a wasteful number, since it uses less digits than its factorization.

650777620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32538890 (or 32538888 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 650777620 is about 25510.3433924359. The cubic root of 650777620 is about 866.5844060648.

The spelling of 650777620 in words is "six hundred fifty million, seven hundred seventy-seven thousand, six hundred twenty".