850640633 has 2 divisors, whose sum is σ = 850640634. Its totient is φ = 850640632.

The previous prime is 850640629. The next prime is 850640647. The reversal of 850640633 is 336046058.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 752788969 + 97851664 = 27437^2 + 9892^2 .

It is a cyclic number.

It is not a de Polignac number, because 850640633 - 2² = 850640629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 850640593 and 850640602.

It is not a weakly prime, because it can be changed into another prime (850640683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425320316 + 425320317.

It is an arithmetic number, because the mean of its divisors is an integer number (425320317).

Almost surely, 2^850640633 is an apocalyptic number.

It is an amenable number.

850640633 is a deficient number, since it is larger than the sum of its proper divisors (1).

850640633 is an equidigital number, since it uses as much as digits as its factorization.

850640633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 850640633 is about 29165.7441701733. The cubic root of 850640633 is about 947.5061583224.

The spelling of 850640633 in words is "eight hundred fifty million, six hundred forty thousand, six hundred thirty-three".