243561796 has 6 divisors (see below), whose sum is σ = 426233150. Its totient is φ = 121780896.

The previous prime is 243561739. The next prime is 243561809. The reversal of 243561796 is 697165342.

It can be written as a sum of positive squares in only one way, i.e., 184579396 + 58982400 = 13586^2 + 7680^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30445221 + ... + 30445228.

Almost surely, 2^243561796 is an apocalyptic number.

It is an amenable number.

243561796 is a deficient number, since it is larger than the sum of its proper divisors (182671354).

243561796 is a wasteful number, since it uses less digits than its factorization.

243561796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60890453 (or 60890451 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 243561796 is about 15606.4664802767. The cubic root of 243561796 is about 624.5056750516.

The spelling of 243561796 in words is "two hundred forty-three million, five hundred sixty-one thousand, seven hundred ninety-six".