197457407 has 12 divisors (see below), whose sum is σ = 230213880. Its totient is φ = 168867216.

The previous prime is 197457401. The next prime is 197457413. The reversal of 197457407 is 704754791.

It is an interprime number because it is at equal distance from previous prime (197457401) and next prime (197457413).

It is not a de Polignac number, because 197457407 - 2⁸ = 197457151 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 (197457401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18569 + ... + 27197.

It is an arithmetic number, because the mean of its divisors is an integer number (19184490).

Almost surely, 2^197457407 is an apocalyptic number.

197457407 is a deficient number, since it is larger than the sum of its proper divisors (32756473).

197457407 is an equidigital number, since it uses as much as digits as its factorization.

197457407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9110 (or 9103 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 197457407 is about 14051.9538499100. The cubic root of 197457407 is about 582.3147754208.

The spelling of 197457407 in words is "one hundred ninety-seven million, four hundred fifty-seven thousand, four hundred seven".