6400195699 has 4 divisors (see below), whose sum is σ = 6400542736. Its totient is φ = 6399848664.

The previous prime is 6400195673. The next prime is 6400195729. The reversal of 6400195699 is 9965910046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9965910046 = 2 ⋅4982955023.

It is a cyclic number.

It is not a de Polignac number, because 6400195699 - 2⁹ = 6400195187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6400195639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144204 + ... + 183289.

It is an arithmetic number, because the mean of its divisors is an integer number (1600135684).

Almost surely, 2^6400195699 is an apocalyptic number.

6400195699 is a deficient number, since it is larger than the sum of its proper divisors (347037).

6400195699 is a wasteful number, since it uses less digits than its factorization.

6400195699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347036.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 6400195699 is about 80001.2231094000. The cubic root of 6400195699 is about 1856.6544573000.

The spelling of 6400195699 in words is "six billion, four hundred million, one hundred ninety-five thousand, six hundred ninety-nine".