538646806 has 16 divisors (see below), whose sum is σ = 819720000. Its totient is φ = 265419648.

The previous prime is 538646803. The next prime is 538646863. The reversal of 538646806 is 608646835.

It is a super-2 number, since 2×538646806² = 580280763228003272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538646803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90820 + ... + 96568.

It is an arithmetic number, because the mean of its divisors is an integer number (51232500).

Almost surely, 2^538646806 is an apocalyptic number.

538646806 is a deficient number, since it is larger than the sum of its proper divisors (281073194).

538646806 is a wasteful number, since it uses less digits than its factorization.

538646806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6423.

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 538646806 is about 23208.7657147036. The cubic root of 538646806 is about 813.6445060715.

The spelling of 538646806 in words is "five hundred thirty-eight million, six hundred forty-six thousand, eight hundred six".