356540197 has 6 divisors (see below), whose sum is σ = 384039698. Its totient is φ = 329051184.

The previous prime is 356540183. The next prime is 356540213. The reversal of 356540197 is 791045653.

It can be written as a sum of positive squares in 3 ways, for example, as 111492481 + 245047716 = 10559^2 + 15654^2 .

It is not a de Polignac number, because 356540197 - 2⁷ = 356540069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (356540117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65463 + ... + 70699.

Almost surely, 2^356540197 is an apocalyptic number.

It is an amenable number.

356540197 is a deficient number, since it is larger than the sum of its proper divisors (27499501).

356540197 is an frugal number, since it uses more digits than its factorization.

356540197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10487 (or 5250 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 356540197 is about 18882.2720296049. The cubic root of 356540197 is about 709.0924044193.

The spelling of 356540197 in words is "three hundred fifty-six million, five hundred forty thousand, one hundred ninety-seven".