806217629 has 12 divisors (see below), whose sum is σ = 941953500. Its totient is φ = 688016448.

The previous prime is 806217619. The next prime is 806217647. The reversal of 806217629 is 926712608.

It can be written as a sum of positive squares in 2 ways, for example, as 787924900 + 18292729 = 28070^2 + 4277^2 .

It is not a de Polignac number, because 806217629 - 2⁴ = 806217613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806217619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24704 + ... + 47145.

It is an arithmetic number, because the mean of its divisors is an integer number (78496125).

Almost surely, 2^806217629 is an apocalyptic number.

It is an amenable number.

806217629 is a deficient number, since it is larger than the sum of its proper divisors (135735871).

806217629 is a wasteful number, since it uses less digits than its factorization.

806217629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72092 (or 72085 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 806217629 is about 28393.9717017539. The cubic root of 806217629 is about 930.7165360848.

The spelling of 806217629 in words is "eight hundred six million, two hundred seventeen thousand, six hundred twenty-nine".