634421445 has 16 divisors (see below), whose sum is σ = 1160085120. Its totient is φ = 290021184.

The previous prime is 634421407. The next prime is 634421461. The reversal of 634421445 is 544124436.

It is a happy number.

It is not a de Polignac number, because 634421445 - 2⁹ = 634420933 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3020950 + ... + 3021159.

It is an arithmetic number, because the mean of its divisors is an integer number (72505320).

Almost surely, 2^634421445 is an apocalyptic number.

It is an amenable number.

634421445 is a deficient number, since it is larger than the sum of its proper divisors (525663675).

634421445 is a wasteful number, since it uses less digits than its factorization.

634421445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042124.

The product of its digits is 46080, while the sum is 33.

The square root of 634421445 is about 25187.7240932959. The cubic root of 634421445 is about 859.2626838030.

The spelling of 634421445 in words is "six hundred thirty-four million, four hundred twenty-one thousand, four hundred forty-five".