511968406 has 16 divisors (see below), whose sum is σ = 794653200. Its totient is φ = 247218048.

The previous prime is 511968397. The next prime is 511968439. The reversal of 511968406 is 604869115.

It is a super-2 number, since 2×511968406² = 524223297484361672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 25791 + ... + 41098.

It is an arithmetic number, because the mean of its divisors is an integer number (49665825).

Almost surely, 2^511968406 is an apocalyptic number.

511968406 is a deficient number, since it is larger than the sum of its proper divisors (282684794).

511968406 is a wasteful number, since it uses less digits than its factorization.

511968406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67023.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 511968406 is about 22626.7188518353. The cubic root of 511968406 is about 799.9835444532.

The spelling of 511968406 in words is "five hundred eleven million, nine hundred sixty-eight thousand, four hundred six".