650140961 has 4 divisors (see below), whose sum is σ = 652258992. Its totient is φ = 648022932.

The previous prime is 650140943. The next prime is 650141003. The reversal of 650140961 is 169041056.

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 650140961 - 2¹⁰ = 650139937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650140661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058555 + ... + 1059168.

It is an arithmetic number, because the mean of its divisors is an integer number (163064748).

Almost surely, 2^650140961 is an apocalyptic number.

It is an amenable number.

650140961 is a deficient number, since it is larger than the sum of its proper divisors (2118031).

650140961 is a wasteful number, since it uses less digits than its factorization.

650140961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118030.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 650140961 is about 25497.8618907547. The cubic root of 650140961 is about 866.3017192408.

The spelling of 650140961 in words is "six hundred fifty million, one hundred forty thousand, nine hundred sixty-one".