816405735 has 16 divisors (see below), whose sum is σ = 1338109920. Its totient is φ = 424796160.

The previous prime is 816405731. The next prime is 816405743. The reversal of 816405735 is 537504618.

It is not a de Polignac number, because 816405735 - 2² = 816405731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 816405693 and 816405702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816405731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663130 + ... + 664359.

It is an arithmetic number, because the mean of its divisors is an integer number (83631870).

Almost surely, 2^816405735 is an apocalyptic number.

816405735 is a deficient number, since it is larger than the sum of its proper divisors (521704185).

816405735 is a wasteful number, since it uses less digits than its factorization.

816405735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327538.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 816405735 is about 28572.8146145948. The cubic root of 816405735 is about 934.6205996893.

The spelling of 816405735 in words is "eight hundred sixteen million, four hundred five thousand, seven hundred thirty-five".