806691642 has 8 divisors (see below), whose sum is σ = 1613383296. Its totient is φ = 268897212.

The previous prime is 806691629. The next prime is 806691647. The reversal of 806691642 is 246196608.

It is a sphenic number, since it is the product of 3 distinct primes.

806691642 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 806691594 and 806691603.

It is not an unprimeable number, because it can be changed into a prime (806691647) 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, 67224298 + ... + 67224309.

It is an arithmetic number, because the mean of its divisors is an integer number (201672912).

Almost surely, 2^806691642 is an apocalyptic number.

806691642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

806691642 is a wasteful number, since it uses less digits than its factorization.

806691642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134448612.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 806691642 is about 28402.3175462848. The cubic root of 806691642 is about 930.8989042560.

The spelling of 806691642 in words is "eight hundred six million, six hundred ninety-one thousand, six hundred forty-two".