6466085491 has 4 divisors (see below), whose sum is σ = 6806405800. Its totient is φ = 6125765184.

The previous prime is 6466085411. The next prime is 6466085531. The reversal of 6466085491 is 1945806646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6466085491 - 2⁷ = 6466085363 is a prime.

It is a super-2 number, since 2×6466085491² = 83620523153841422162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6466085411) 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, 170160126 + ... + 170160163.

It is an arithmetic number, because the mean of its divisors is an integer number (1701601450).

Almost surely, 2^6466085491 is an apocalyptic number.

6466085491 is a deficient number, since it is larger than the sum of its proper divisors (340320309).

6466085491 is a wasteful number, since it uses less digits than its factorization.

6466085491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340320308.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 6466085491 is about 80411.9735549377. The cubic root of 6466085491 is about 1863.0041147370.

The spelling of 6466085491 in words is "six billion, four hundred sixty-six million, eighty-five thousand, four hundred ninety-one".