634421145 has 16 divisors (see below), whose sum is σ = 1015410240. Its totient is φ = 338245824.

The previous prime is 634421119. The next prime is 634421171. The reversal of 634421145 is 541124436.

It is an interprime number because it is at equal distance from previous prime (634421119) and next prime (634421171).

It is not a de Polignac number, because 634421145 - 2¹⁰ = 634420121 is a prime.

It is a super-2 number, since 2×634421145² = 804980378446222050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61146 + ... + 70764.

It is an arithmetic number, because the mean of its divisors is an integer number (63463140).

Almost surely, 2^634421145 is an apocalyptic number.

It is an amenable number.

634421145 is a deficient number, since it is larger than the sum of its proper divisors (380989095).

634421145 is a wasteful number, since it uses less digits than its factorization.

634421145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14024.

The product of its digits is 11520, while the sum is 30.

The square root of 634421145 is about 25187.7181380132. The cubic root of 634421145 is about 859.2625483626.

The spelling of 634421145 in words is "six hundred thirty-four million, four hundred twenty-one thousand, one hundred forty-five".