405601601 has 8 divisors (see below), whose sum is σ = 408672000. Its totient is φ = 402541920.

The previous prime is 405601597. The next prime is 405601673. The reversal of 405601601 is 106106504.

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 405601601 - 2² = 405601597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (405601501) 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, 83405 + ... + 88133.

It is an arithmetic number, because the mean of its divisors is an integer number (51084000).

Almost surely, 2^405601601 is an apocalyptic number.

It is an amenable number.

405601601 is a deficient number, since it is larger than the sum of its proper divisors (3070399).

405601601 is a wasteful number, since it uses less digits than its factorization.

405601601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5359.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 405601601 is about 20139.5531479723. The cubic root of 405601601 is about 740.2297807242.

The spelling of 405601601 in words is "four hundred five million, six hundred one thousand, six hundred one".