634619 has 8 divisors (see below), whose sum is σ = 675840. Its totient is φ = 594216.

The previous prime is 634609. The next prime is 634643. The reversal of 634619 is 916436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 634619 - 2⁴ = 634603 is a prime.

It is a super-2 number, since 2×634619² = 805482550322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634591 and 634600.

It is not an unprimeable number, because it can be changed into a prime (634609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2282 + ... + 2544.

It is an arithmetic number, because the mean of its divisors is an integer number (84480).

2⁶³⁴⁶¹⁹ is an apocalyptic number.

634619 is a deficient number, since it is larger than the sum of its proper divisors (41221).

634619 is a wasteful number, since it uses less digits than its factorization.

634619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its digits is 3888, while the sum is 29.

The square root of 634619 is about 796.6297759938. The cubic root of 634619 is about 85.9351864281.

The spelling of 634619 in words is "six hundred thirty-four thousand, six hundred nineteen".