197402645 has 8 divisors (see below), whose sum is σ = 258418080. Its totient is φ = 143565520.

The previous prime is 197402587. The next prime is 197402669. The reversal of 197402645 is 546204791.

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

It is not a de Polignac number, because 197402645 - 2²⁰ = 196354069 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 197402599 and 197402608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1794515 + ... + 1794624.

It is an arithmetic number, because the mean of its divisors is an integer number (32302260).

Almost surely, 2^197402645 is an apocalyptic number.

It is an amenable number.

197402645 is a deficient number, since it is larger than the sum of its proper divisors (61015435).

197402645 is a wasteful number, since it uses less digits than its factorization.

197402645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589155.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 197402645 is about 14050.0051601414. The cubic root of 197402645 is about 582.2609382066.

The spelling of 197402645 in words is "one hundred ninety-seven million, four hundred two thousand, six hundred forty-five".