1634401 has 8 divisors (see below), whose sum is σ = 1695104. Its totient is φ = 1574640.

The previous prime is 1634393. The next prime is 1634407. The reversal of 1634401 is 1044361.

It is a happy number.

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

It is a 5-Lehmer number, since φ(1634401) divides (1634401-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 1634401 - 2³ = 1634393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1634407) 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, 5896 + ... + 6166.

It is an arithmetic number, because the mean of its divisors is an integer number (211888).

2^1634401 is an apocalyptic number.

It is an amenable number.

1634401 is a deficient number, since it is larger than the sum of its proper divisors (60703).

1634401 is a wasteful number, since it uses less digits than its factorization.

1634401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1634401 is about 1278.4369362624. The cubic root of 1634401 is about 117.7930154790.

Adding to 1634401 its reverse (1044361), we get a palindrome (2678762).

The spelling of 1634401 in words is "one million, six hundred thirty-four thousand, four hundred one".