633414421 has 2 divisors, whose sum is σ = 633414422. Its totient is φ = 633414420.

The previous prime is 633414391. The next prime is 633414437. The reversal of 633414421 is 124414336.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 322597521 + 310816900 = 17961^2 + 17630^2 .

It is a cyclic number.

It is not a de Polignac number, because 633414421 - 2⁷ = 633414293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 633414421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (633414721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316707210 + 316707211.

It is an arithmetic number, because the mean of its divisors is an integer number (316707211).

Almost surely, 2^633414421 is an apocalyptic number.

It is an amenable number.

633414421 is a deficient number, since it is larger than the sum of its proper divisors (1).

633414421 is an equidigital number, since it uses as much as digits as its factorization.

633414421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

The square root of 633414421 is about 25167.7257812461. The cubic root of 633414421 is about 858.8078040653.

Adding to 633414421 its reverse (124414336), we get a palindrome (757828757).

The spelling of 633414421 in words is "six hundred thirty-three million, four hundred fourteen thousand, four hundred twenty-one".