633427906997 has 2 divisors, whose sum is σ = 633427906998. Its totient is φ = 633427906996.

The previous prime is 633427906961. The next prime is 633427907003. The reversal of 633427906997 is 799609724336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 529480343716 + 103947563281 = 727654^2 + 322409^2 .

It is a cyclic number.

It is not a de Polignac number, because 633427906997 - 2¹⁰ = 633427905973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (633427900997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316713953498 + 316713953499.

It is an arithmetic number, because the mean of its divisors is an integer number (316713953499).

Almost surely, 2^633427906997 is an apocalyptic number.

It is an amenable number.

633427906997 is a deficient number, since it is larger than the sum of its proper divisors (1).

633427906997 is an equidigital number, since it uses as much as digits as its factorization.

633427906997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92588832, while the sum is 65.

The spelling of 633427906997 in words is "six hundred thirty-three billion, four hundred twenty-seven million, nine hundred six thousand, nine hundred ninety-seven".