650505172 has 6 divisors (see below), whose sum is σ = 1138384058. Its totient is φ = 325252584.

The previous prime is 650505169. The next prime is 650505173. The reversal of 650505172 is 271505056.

It can be written as a sum of positive squares in only one way, i.e., 536570896 + 113934276 = 23164^2 + 10674^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650505173) 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 as a sum of consecutive naturals, namely, 81313143 + ... + 81313150.

Almost surely, 2^650505172 is an apocalyptic number.

It is an amenable number.

650505172 is a deficient number, since it is larger than the sum of its proper divisors (487878886).

650505172 is a wasteful number, since it uses less digits than its factorization.

650505172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162626297 (or 162626295 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 650505172 is about 25505.0028817877. The cubic root of 650505172 is about 866.4634573535.

The spelling of 650505172 in words is "six hundred fifty million, five hundred five thousand, one hundred seventy-two".