821416695 has 16 divisors (see below), whose sum is σ = 1433745792. Its totient is φ = 398262560.

The previous prime is 821416691. The next prime is 821416711. The reversal of 821416695 is 596614128.

It is not a de Polignac number, because 821416695 - 2² = 821416691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821416691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2488977 + ... + 2489306.

It is an arithmetic number, because the mean of its divisors is an integer number (89609112).

Almost surely, 2^821416695 is an apocalyptic number.

821416695 is a deficient number, since it is larger than the sum of its proper divisors (612329097).

821416695 is a wasteful number, since it uses less digits than its factorization.

821416695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4978302.

The product of its digits is 103680, while the sum is 42.

The square root of 821416695 is about 28660.3680192701. The cubic root of 821416695 is about 936.5288816941.

The spelling of 821416695 in words is "eight hundred twenty-one million, four hundred sixteen thousand, six hundred ninety-five".