805696531236 has 135 divisors (see below), whose sum is σ = 2154047398657. Its totient is φ = 262603611360.

The previous prime is 805696531207. The next prime is 805696531247. The reversal of 805696531236 is 632135696508.

It is a happy number.

The square root of 805696531236 is 897606.

It is a perfect power (a square), and thus also a powerful number.

805696531236 is a `hidden beast` number, since 8 + 0 + 569 + 6 + 53 + 1 + 23 + 6 = 666.

805696531236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 530575300836 + 275121230400 = 728406^2 + 524520^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 759374146 + ... + 759375206.

Almost surely, 2^805696531236 is an apocalyptic number.

805696531236 is the 897606-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805696531236

805696531236 is an abundant number, since it is smaller than the sum of its proper divisors (1348350867421).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

805696531236 is an equidigital number, since it uses as much as digits as its factorization.

805696531236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 805696531236 in words is "eight hundred five billion, six hundred ninety-six million, five hundred thirty-one thousand, two hundred thirty-six".