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1684401 = 31274421
BaseRepresentation
bin110011011001110110001
310011120120020
412123032301
5412400101
6100034053
720213535
oct6331661
93146506
101684401
11a50574
12692929
1346c8b4
1431bbc5
15234136
hex19b3b1

1684401 has 8 divisors (see below), whose sum is σ = 2264064. Its totient is φ = 1113840.

The previous prime is 1684399. The next prime is 1684409. The reversal of 1684401 is 1044861.

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

It is not a de Polignac number, because 1684401 - 21 = 1684399 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1684409) 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, 1830 + ... + 2591.

It is an arithmetic number, because the mean of its divisors is an integer number (283008).

21684401 is an apocalyptic number.

It is an amenable number.

1684401 is a deficient number, since it is larger than the sum of its proper divisors (579663).

1684401 is a wasteful number, since it uses less digits than its factorization.

1684401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4551.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1684401 is about 1297.8447518868. The cubic root of 1684401 is about 118.9821548930.

The spelling of 1684401 in words is "one million, six hundred eighty-four thousand, four hundred one".

Divisors: 1 3 127 381 4421 13263 561467 1684401