243376697 has 4 divisors (see below), whose sum is σ = 249312756. Its totient is φ = 237440640.

The previous prime is 243376621. The next prime is 243376703. The reversal of 243376697 is 796673342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54479161 + 188897536 = 7381^2 + 13744^2 .

It is a cyclic number.

It is not a de Polignac number, because 243376697 - 2¹² = 243372601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243376597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2967968 + ... + 2968049.

It is an arithmetic number, because the mean of its divisors is an integer number (62328189).

Almost surely, 2^243376697 is an apocalyptic number.

It is an amenable number.

243376697 is a deficient number, since it is larger than the sum of its proper divisors (5936059).

243376697 is an equidigital number, since it uses as much as digits as its factorization.

243376697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5936058.

The product of its digits is 1143072, while the sum is 47.

The square root of 243376697 is about 15600.5351510774. The cubic root of 243376697 is about 624.3474336619.

The spelling of 243376697 in words is "two hundred forty-three million, three hundred seventy-six thousand, six hundred ninety-seven".