96181821 has 12 divisors (see below), whose sum is σ = 139062300. Its totient is φ = 64059840.

The previous prime is 96181817. The next prime is 96181823. The reversal of 96181821 is 12818169.

96181821 is a `hidden beast` number, since 9 + 618 + 18 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 84382596 + 11799225 = 9186^2 + 3435^2 .

It is not a de Polignac number, because 96181821 - 2² = 96181817 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (96181823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6105 + ... + 15153.

It is an arithmetic number, because the mean of its divisors is an integer number (11588525).

Almost surely, 2^96181821 is an apocalyptic number.

It is an amenable number.

96181821 is a deficient number, since it is larger than the sum of its proper divisors (42880479).

96181821 is a wasteful number, since it uses less digits than its factorization.

96181821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10236 (or 10233 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 96181821 is about 9807.2330960368. The cubic root of 96181821 is about 458.1745884480.

The spelling of 96181821 in words is "ninety-six million, one hundred eighty-one thousand, eight hundred twenty-one".