650145506 has 4 divisors (see below), whose sum is σ = 975218262. Its totient is φ = 325072752.

The previous prime is 650145451. The next prime is 650145521. The reversal of 650145506 is 605541056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 393665281 + 256480225 = 19841^2 + 16015^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162536375 + ... + 162536378.

Almost surely, 2^650145506 is an apocalyptic number.

650145506 is a deficient number, since it is larger than the sum of its proper divisors (325072756).

650145506 is a wasteful number, since it uses less digits than its factorization.

650145506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325072755.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 650145506 is about 25497.9510157189. The cubic root of 650145506 is about 866.3037379477.

The spelling of 650145506 in words is "six hundred fifty million, one hundred forty-five thousand, five hundred six".