806498643 has 32 divisors (see below), whose sum is σ = 1150912000. Its totient is φ = 500898816.

The previous prime is 806498617. The next prime is 806498647. The reversal of 806498643 is 346894608.

It is not a de Polignac number, because 806498643 - 2⁶ = 806498579 is a prime.

It is a super-2 number, since 2×806498643² = 1300880122321682898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 806498592 and 806498601.

It is not an unprimeable number, because it can be changed into a prime (806498647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1099905 + ... + 1100637.

It is an arithmetic number, because the mean of its divisors is an integer number (35966000).

Almost surely, 2^806498643 is an apocalyptic number.

806498643 is a deficient number, since it is larger than the sum of its proper divisors (344413357).

806498643 is a wasteful number, since it uses less digits than its factorization.

806498643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its (nonzero) digits is 995328, while the sum is 48.

The square root of 806498643 is about 28398.9197505821. The cubic root of 806498643 is about 930.8246599070.

The spelling of 806498643 in words is "eight hundred six million, four hundred ninety-eight thousand, six hundred forty-three".