197493345 has 24 divisors (see below), whose sum is σ = 391225536. Its totient is φ = 90282528.

The previous prime is 197493337. The next prime is 197493347. The reversal of 197493345 is 543394791.

It is not a de Polignac number, because 197493345 - 2³ = 197493337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 197493345.

It is not an unprimeable number, because it can be changed into a prime (197493347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 313167 + ... + 313796.

It is an arithmetic number, because the mean of its divisors is an integer number (16301064).

Almost surely, 2^197493345 is an apocalyptic number.

197493345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197493345 is a deficient number, since it is larger than the sum of its proper divisors (193732191).

197493345 is a wasteful number, since it uses less digits than its factorization.

197493345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626981 (or 626978 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 197493345 is about 14053.2325462863. The cubic root of 197493345 is about 582.3501011133.

The spelling of 197493345 in words is "one hundred ninety-seven million, four hundred ninety-three thousand, three hundred forty-five".