633994061 has 2 divisors, whose sum is σ = 633994062. Its totient is φ = 633994060.

The previous prime is 633994043. The next prime is 633994079. The reversal of 633994061 is 160499336.

It is a balanced prime because it is at equal distance from previous prime (633994043) and next prime (633994079).

It can be written as a sum of positive squares in only one way, i.e., 561216100 + 72777961 = 23690^2 + 8531^2 .

It is a cyclic number.

It is not a de Polignac number, because 633994061 - 2¹⁰ = 633993037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (633994091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316997030 + 316997031.

It is an arithmetic number, because the mean of its divisors is an integer number (316997031).

Almost surely, 2^633994061 is an apocalyptic number.

It is an amenable number.

633994061 is a deficient number, since it is larger than the sum of its proper divisors (1).

633994061 is an equidigital number, since it uses as much as digits as its factorization.

633994061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 41.

The square root of 633994061 is about 25179.2386898413. The cubic root of 633994061 is about 859.0696903177.

The spelling of 633994061 in words is "six hundred thirty-three million, nine hundred ninety-four thousand, sixty-one".