406563677 has 16 divisors (see below), whose sum is σ = 448277760. Its totient is φ = 366382272.

The previous prime is 406563649. The next prime is 406563697. The reversal of 406563677 is 776365604.

It is a cyclic number.

It is not a de Polignac number, because 406563677 - 2²⁴ = 389786461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406563697) 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, 398474 + ... + 399492.

It is an arithmetic number, because the mean of its divisors is an integer number (28017360).

Almost surely, 2^406563677 is an apocalyptic number.

406563677 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

406563677 is a deficient number, since it is larger than the sum of its proper divisors (41714083).

406563677 is a wasteful number, since it uses less digits than its factorization.

406563677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732.

The product of its (nonzero) digits is 635040, while the sum is 44.

The square root of 406563677 is about 20163.4242379612. The cubic root of 406563677 is about 740.8145869092.

The spelling of 406563677 in words is "four hundred six million, five hundred sixty-three thousand, six hundred seventy-seven".