633622061 has 4 divisors (see below), whose sum is σ = 640741500. Its totient is φ = 626502624.

The previous prime is 633622057. The next prime is 633622081. The reversal of 633622061 is 160226336.

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

It can be written as a sum of positive squares in 2 ways, for example, as 81090025 + 552532036 = 9005^2 + 23506^2 .

It is a cyclic number.

It is not a de Polignac number, because 633622061 - 2² = 633622057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633622021) 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, 3559586 + ... + 3559763.

It is an arithmetic number, because the mean of its divisors is an integer number (160185375).

Almost surely, 2^633622061 is an apocalyptic number.

It is an amenable number.

633622061 is a deficient number, since it is larger than the sum of its proper divisors (7119439).

633622061 is an equidigital number, since it uses as much as digits as its factorization.

633622061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7119438.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 633622061 is about 25171.8505676480. The cubic root of 633622061 is about 858.9016359310.

Adding to 633622061 its reverse (160226336), we get a palindrome (793848397).

The spelling of 633622061 in words is "six hundred thirty-three million, six hundred twenty-two thousand, sixty-one".