8161600 has 42 divisors (see below), whose sum is σ = 20086574. Its totient is φ = 3264000.

The previous prime is 8161591. The next prime is 8161607. The reversal of 8161600 is 61618.

8161600 is nontrivially palindromic in base 15.

It can be written as a sum of positive squares in 3 ways, for example, as 141376 + 8020224 = 376^2 + 2832^2 .

It is a super-2 number, since 2×8161600² = 133223429120000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 951 + ... + 4150.

Almost surely, 2^8161600 is an apocalyptic number.

8161600 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8161600 is an abundant number, since it is smaller than the sum of its proper divisors (11924974).

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

8161600 is a wasteful number, since it uses less digits than its factorization.

8161600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5123 (or 5108 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 8161600 is about 2856.8514137071. The cubic root of 8161600 is about 201.3376995189.

The spelling of 8161600 in words is "eight million, one hundred sixty-one thousand, six hundred".