634419 has 8 divisors (see below), whose sum is σ = 939920. Its totient is φ = 422928.

The previous prime is 634397. The next prime is 634421. The reversal of 634419 is 914436.

It is not a de Polignac number, because 634419 - 2¹¹ = 632371 is a prime.

It is a super-2 number, since 2×634419² = 804974935122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 23497 = 634419 / (6 + 3 + 4 + 4 + 1 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634392 and 634401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634499) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11722 + ... + 11775.

It is an arithmetic number, because the mean of its divisors is an integer number (117490).

2⁶³⁴⁴¹⁹ is an apocalyptic number.

634419 is a deficient number, since it is larger than the sum of its proper divisors (305501).

634419 is a wasteful number, since it uses less digits than its factorization.

634419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23506 (or 23500 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 634419 is about 796.5042372769. The cubic root of 634419 is about 85.9261579963.

The spelling of 634419 in words is "six hundred thirty-four thousand, four hundred nineteen".