6467574161 has 4 divisors (see below), whose sum is σ = 6469446324. Its totient is φ = 6465702000.

The previous prime is 6467574149. The next prime is 6467574173. The reversal of 6467574161 is 1614757646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1614757646 = 2 ⋅807378823.

It is an interprime number because it is at equal distance from previous prime (6467574149) and next prime (6467574173).

It can be written as a sum of positive squares in 2 ways, for example, as 4350193936 + 2117380225 = 65956^2 + 46015^2 .

It is a cyclic number.

It is not a de Polignac number, because 6467574161 - 2²⁶ = 6400465297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6467574761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930890 + ... + 937811.

It is an arithmetic number, because the mean of its divisors is an integer number (1617361581).

Almost surely, 2^6467574161 is an apocalyptic number.

It is an amenable number.

6467574161 is a deficient number, since it is larger than the sum of its proper divisors (1872163).

6467574161 is a wasteful number, since it uses less digits than its factorization.

6467574161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872162.

The product of its digits is 846720, while the sum is 47.

The square root of 6467574161 is about 80421.2295417075. The cubic root of 6467574161 is about 1863.1470752928.

The spelling of 6467574161 in words is "six billion, four hundred sixty-seven million, five hundred seventy-four thousand, one hundred sixty-one".