816671752 has 16 divisors (see below), whose sum is σ = 1649048940. Its totient is φ = 376925376.

The previous prime is 816671731. The next prime is 816671783. The reversal of 816671752 is 257176618.

It can be written as a sum of positive squares in 2 ways, for example, as 729324036 + 87347716 = 27006^2 + 9346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 816671699 and 816671708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3926203 + ... + 3926410.

Almost surely, 2^816671752 is an apocalyptic number.

It is an amenable number.

816671752 is an abundant number, since it is smaller than the sum of its proper divisors (832377188).

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

816671752 is a wasteful number, since it uses less digits than its factorization.

816671752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7852632 (or 7852628 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 816671752 is about 28577.4693071307. The cubic root of 816671752 is about 934.7221006784.

The spelling of 816671752 in words is "eight hundred sixteen million, six hundred seventy-one thousand, seven hundred fifty-two".