6406660422 has 24 divisors (see below), whose sum is σ = 13882569480. Its totient is φ = 2135327040.

The previous prime is 6406660411. The next prime is 6406660423. The reversal of 6406660422 is 2240666046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6406660423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 323029 + ... + 342287.

It is an arithmetic number, because the mean of its divisors is an integer number (578440395).

Almost surely, 2^6406660422 is an apocalyptic number.

6406660422 is an abundant number, since it is smaller than the sum of its proper divisors (7475909058).

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

6406660422 is a wasteful number, since it uses less digits than its factorization.

6406660422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37748 (or 37745 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 6406660422 is about 80041.6168127556. The cubic root of 6406660422 is about 1857.2793714093.

The spelling of 6406660422 in words is "six billion, four hundred six million, six hundred sixty thousand, four hundred twenty-two".