819066897 has 20 divisors (see below), whose sum is σ = 1334777136. Its totient is φ = 496403640.

The previous prime is 819066847. The next prime is 819066901. The reversal of 819066897 is 798660918.

It is not a de Polignac number, because 819066897 - 2⁷ = 819066769 is a prime.

It is a super-2 number, since 2×819066897² = 1341741163522417218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (819066847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 458743 + ... + 460524.

Almost surely, 2^819066897 is an apocalyptic number.

It is an amenable number.

819066897 is a deficient number, since it is larger than the sum of its proper divisors (515710239).

819066897 is a wasteful number, since it uses less digits than its factorization.

819066897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919290 (or 919281 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The square root of 819066897 is about 28619.3448038211. The cubic root of 819066897 is about 935.6349969815.

The spelling of 819066897 in words is "eight hundred nineteen million, sixty-six thousand, eight hundred ninety-seven".