6449080691 has 16 divisors (see below), whose sum is σ = 6825772800. Its totient is φ = 6083212800.

The previous prime is 6449080657. The next prime is 6449080717. The reversal of 6449080691 is 1960809446.

It is a happy number.

6449080691 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6449080691 - 2²² = 6444886387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6449080091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2170655 + ... + 2173623.

It is an arithmetic number, because the mean of its divisors is an integer number (426610800).

Almost surely, 2^6449080691 is an apocalyptic number.

6449080691 is a deficient number, since it is larger than the sum of its proper divisors (376692109).

6449080691 is a wasteful number, since it uses less digits than its factorization.

6449080691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 6449080691 is about 80306.1684492543. The cubic root of 6449080691 is about 1861.3695439069.

The spelling of 6449080691 in words is "six billion, four hundred forty-nine million, eighty thousand, six hundred ninety-one".