6690040046 has 16 divisors (see below), whose sum is σ = 10093362048. Its totient is φ = 3325635000.

The previous prime is 6690040003. The next prime is 6690040067. The reversal of 6690040046 is 6400400966.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6690039988 and 6690040015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270791 + ... + 294461.

It is an arithmetic number, because the mean of its divisors is an integer number (630835128).

Almost surely, 2^6690040046 is an apocalyptic number.

6690040046 is a deficient number, since it is larger than the sum of its proper divisors (3403322002).

6690040046 is a wasteful number, since it uses less digits than its factorization.

6690040046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24487.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 6690040046 is about 81792.6649889830. The cubic root of 6690040046 is about 1884.2690114543.

The spelling of 6690040046 in words is "six billion, six hundred ninety million, forty thousand, forty-six".