143605397 has 8 divisors (see below), whose sum is σ = 155548344. Its totient is φ = 131790528.

The previous prime is 143605391. The next prime is 143605417. The reversal of 143605397 is 793506341.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3632836 + 139972561 = 1906^2 + 11831^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143605397 - 2⁶ = 143605333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143605397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143605391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29678 + ... + 34175.

It is an arithmetic number, because the mean of its divisors is an integer number (19443543).

Almost surely, 2^143605397 is an apocalyptic number.

It is an amenable number.

143605397 is a deficient number, since it is larger than the sum of its proper divisors (11942947).

143605397 is a wasteful number, since it uses less digits than its factorization.

143605397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64039.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 143605397 is about 11983.5469290190. The cubic root of 143605397 is about 523.6690665798.

The spelling of 143605397 in words is "one hundred forty-three million, six hundred five thousand, three hundred ninety-seven".