650661506 has 16 divisors (see below), whose sum is σ = 1075059648. Its totient is φ = 292882800.

The previous prime is 650661497. The next prime is 650661521. The reversal of 650661506 is 605166056.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141305 + ... + 145836.

It is an arithmetic number, because the mean of its divisors is an integer number (67191228).

Almost surely, 2^650661506 is an apocalyptic number.

650661506 is a deficient number, since it is larger than the sum of its proper divisors (424398142).

650661506 is a wasteful number, since it uses less digits than its factorization.

650661506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287257.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 650661506 is about 25508.0674689401. The cubic root of 650661506 is about 866.5328633342.

The spelling of 650661506 in words is "six hundred fifty million, six hundred sixty-one thousand, five hundred six".