1405601 has 8 divisors (see below), whose sum is σ = 1531200. Its totient is φ = 1285200.

The previous prime is 1405597. The next prime is 1405631. The reversal of 1405601 is 1065041.

It is a happy number.

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 1405601 - 2² = 1405597 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1405601.

It is not an unprimeable number, because it can be changed into a prime (1405631) 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, 725 + ... + 1826.

It is an arithmetic number, because the mean of its divisors is an integer number (191400).

2^1405601 is an apocalyptic number.

It is an amenable number.

1405601 is a deficient number, since it is larger than the sum of its proper divisors (125599).

1405601 is a wasteful number, since it uses less digits than its factorization.

1405601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1405601 is about 1185.5804485567. The cubic root of 1405601 is about 112.0178808611.

The spelling of 1405601 in words is "one million, four hundred five thousand, six hundred one".