806942669 has 4 divisors (see below), whose sum is σ = 869015196. Its totient is φ = 744870144.

The previous prime is 806942623. The next prime is 806942693. The reversal of 806942669 is 966249608.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 495596644 + 311346025 = 22262^2 + 17645^2 .

It is a cyclic number.

It is not a de Polignac number, because 806942669 - 2¹⁶ = 806877133 is a prime.

It is a super-2 number, since 2×806942669² = 1302312942105687122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806942699) 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, 31036244 + ... + 31036269.

It is an arithmetic number, because the mean of its divisors is an integer number (217253799).

Almost surely, 2^806942669 is an apocalyptic number.

It is an amenable number.

806942669 is a deficient number, since it is larger than the sum of its proper divisors (62072527).

806942669 is a wasteful number, since it uses less digits than its factorization.

806942669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62072526.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 806942669 is about 28406.7363313704. The cubic root of 806942669 is about 930.9954535496.

The spelling of 806942669 in words is "eight hundred six million, nine hundred forty-two thousand, six hundred sixty-nine".