6400667334 has 16 divisors (see below), whose sum is σ = 12803019840. Its totient is φ = 2133274920.

The previous prime is 6400667291. The next prime is 6400667341. The reversal of 6400667334 is 4337660046.

It is a junction number, because it is equal to n+sod(n) for n = 6400667292 and 6400667301.

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, 17832 + ... + 114539.

It is an arithmetic number, because the mean of its divisors is an integer number (800188740).

Almost surely, 2^6400667334 is an apocalyptic number.

6400667334 is an abundant number, since it is smaller than the sum of its proper divisors (6402352506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6400667334 is a wasteful number, since it uses less digits than its factorization.

6400667334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140435.

The product of its (nonzero) digits is 217728, while the sum is 39.

The square root of 6400667334 is about 80004.1707287814. The cubic root of 6400667334 is about 1856.7000622449.

The spelling of 6400667334 in words is "six billion, four hundred million, six hundred sixty-seven thousand, three hundred thirty-four".