6405716692 has 6 divisors (see below), whose sum is σ = 11210004218. Its totient is φ = 3202858344.

The previous prime is 6405716627. The next prime is 6405716693. The reversal of 6405716692 is 2966175046.

It can be written as a sum of positive squares in only one way, i.e., 6254279056 + 151437636 = 79084^2 + 12306^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6405716693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800714583 + ... + 800714590.

Almost surely, 2^6405716692 is an apocalyptic number.

It is an amenable number.

6405716692 is a deficient number, since it is larger than the sum of its proper divisors (4804287526).

6405716692 is a wasteful number, since it uses less digits than its factorization.

6405716692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601429177 (or 1601429175 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 6405716692 is about 80035.7213499073. The cubic root of 6405716692 is about 1857.1881717193.

The spelling of 6405716692 in words is "six billion, four hundred five million, seven hundred sixteen thousand, six hundred ninety-two".