406656255 has 16 divisors (see below), whose sum is σ = 650913120. Its totient is φ = 216795648.

The previous prime is 406656253. The next prime is 406656293. The reversal of 406656255 is 552656604.

It is a happy number.

It is not a de Polignac number, because 406656255 - 2¹ = 406656253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406656251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52939 + ... + 60131.

It is an arithmetic number, because the mean of its divisors is an integer number (40682070).

Almost surely, 2^406656255 is an apocalyptic number.

406656255 is a deficient number, since it is larger than the sum of its proper divisors (244256865).

406656255 is a wasteful number, since it uses less digits than its factorization.

406656255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10970.

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 406656255 is about 20165.7197987079. The cubic root of 406656255 is about 740.8708125648.

The spelling of 406656255 in words is "four hundred six million, six hundred fifty-six thousand, two hundred fifty-five".