650745631 has 2 divisors, whose sum is σ = 650745632. Its totient is φ = 650745630.

The previous prime is 650745619. The next prime is 650745671. The reversal of 650745631 is 136547056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 650745631 - 2⁹ = 650745119 is a prime.

It is a super-2 number, since 2×650745631² = 846939752531176322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (650745671) 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, 325372815 + 325372816.

It is an arithmetic number, because the mean of its divisors is an integer number (325372816).

Almost surely, 2^650745631 is an apocalyptic number.

650745631 is a deficient number, since it is larger than the sum of its proper divisors (1).

650745631 is an equidigital number, since it uses as much as digits as its factorization.

650745631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 650745631 is about 25509.7164037549. The cubic root of 650745631 is about 866.5702068351.

The spelling of 650745631 in words is "six hundred fifty million, seven hundred forty-five thousand, six hundred thirty-one".