406618601 has 4 divisors (see below), whose sum is σ = 428019600. Its totient is φ = 385217604.

The previous prime is 406618591. The next prime is 406618643. The reversal of 406618601 is 106816604.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406618601 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 (406618651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10700471 + ... + 10700508.

It is an arithmetic number, because the mean of its divisors is an integer number (107004900).

Almost surely, 2^406618601 is an apocalyptic number.

It is an amenable number.

406618601 is a deficient number, since it is larger than the sum of its proper divisors (21400999).

406618601 is a wasteful number, since it uses less digits than its factorization.

406618601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21400998.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 406618601 is about 20164.7861630120. The cubic root of 406618601 is about 740.8479450853.

The spelling of 406618601 in words is "four hundred six million, six hundred eighteen thousand, six hundred one".