406601655 has 16 divisors (see below), whose sum is σ = 650840064. Its totient is φ = 216761760.

The previous prime is 406601623. The next prime is 406601669. The reversal of 406601655 is 556106604.

It is not a de Polignac number, because 406601655 - 2⁵ = 406601623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44922 + ... + 53208.

It is an arithmetic number, because the mean of its divisors is an integer number (40677504).

Almost surely, 2^406601655 is an apocalyptic number.

406601655 is a deficient number, since it is larger than the sum of its proper divisors (244238409).

406601655 is a wasteful number, since it uses less digits than its factorization.

406601655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11566.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 406601655 is about 20164.3659706920. The cubic root of 406601655 is about 740.8376532265.

The spelling of 406601655 in words is "four hundred six million, six hundred one thousand, six hundred fifty-five".