406247655 has 32 divisors (see below), whose sum is σ = 714228480. Its totient is φ = 195540480.

The previous prime is 406247629. The next prime is 406247663. The reversal of 406247655 is 556742604.

It is not a de Polignac number, because 406247655 - 2⁹ = 406247143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14079 + ... + 31791.

It is an arithmetic number, because the mean of its divisors is an integer number (22319640).

Almost surely, 2^406247655 is an apocalyptic number.

406247655 is a deficient number, since it is larger than the sum of its proper divisors (307980825).

406247655 is a wasteful number, since it uses less digits than its factorization.

406247655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17871.

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 406247655 is about 20155.5861983719. The cubic root of 406247655 is about 740.6225920625.

The spelling of 406247655 in words is "four hundred six million, two hundred forty-seven thousand, six hundred fifty-five".