806591191464 has 320 divisors, whose sum is σ = 2342768313600. Its totient is φ = 259120705536.

The previous prime is 806591191457. The next prime is 806591191489. The reversal of 806591191464 is 464191195608.

806591191464 is a `hidden beast` number, since 8 + 0 + 6 + 5 + 91 + 1 + 91 + 464 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 806591191464.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 913466367 + ... + 913467249.

It is an arithmetic number, because the mean of its divisors is an integer number (7321150980).

Almost surely, 2^806591191464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 806591191464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1171384156800).

806591191464 is an abundant number, since it is smaller than the sum of its proper divisors (1536177122136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

806591191464 is a wasteful number, since it uses less digits than its factorization.

806591191464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 806591191464 in words is "eight hundred six billion, five hundred ninety-one million, one hundred ninety-one thousand, four hundred sixty-four".