816429697 has 8 divisors (see below), whose sum is σ = 825424992. Its totient is φ = 807446400.

The previous prime is 816429683. The next prime is 816429703. The reversal of 816429697 is 796924618.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 816429697 - 2⁷ = 816429569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (816420697) 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 7 ways as a sum of consecutive naturals, for example, 232122 + ... + 235612.

It is an arithmetic number, because the mean of its divisors is an integer number (103178124).

Almost surely, 2^816429697 is an apocalyptic number.

It is an amenable number.

816429697 is a deficient number, since it is larger than the sum of its proper divisors (8995295).

816429697 is a wasteful number, since it uses less digits than its factorization.

816429697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5999.

The product of its digits is 1306368, while the sum is 52.

The square root of 816429697 is about 28573.2339261764. The cubic root of 816429697 is about 934.6297434923.

The spelling of 816429697 in words is "eight hundred sixteen million, four hundred twenty-nine thousand, six hundred ninety-seven".