650460391 has 4 divisors (see below), whose sum is σ = 743383312. Its totient is φ = 557537472.

The previous prime is 650460389. The next prime is 650460413. The reversal of 650460391 is 193064056.

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

It is a cyclic number.

It is not a de Polignac number, because 650460391 - 2¹ = 650460389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650460311) 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 in 3 ways as a sum of consecutive naturals, for example, 46461450 + ... + 46461463.

It is an arithmetic number, because the mean of its divisors is an integer number (185845828).

Almost surely, 2^650460391 is an apocalyptic number.

650460391 is a deficient number, since it is larger than the sum of its proper divisors (92922921).

650460391 is an equidigital number, since it uses as much as digits as its factorization.

650460391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92922920.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 650460391 is about 25504.1249800890. The cubic root of 650460391 is about 866.4435743497.

It can be divided in two parts, 650 and 460391, that added together give a square (461041 = 679²).

The spelling of 650460391 in words is "six hundred fifty million, four hundred sixty thousand, three hundred ninety-one".