197564265 has 80 divisors (see below), whose sum is σ = 368831232. Its totient is φ = 101108736.

The previous prime is 197564251. The next prime is 197564291. The reversal of 197564265 is 562465791.

It is not a de Polignac number, because 197564265 - 2⁵ = 197564233 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 197564265.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1846342 + ... + 1846448.

Almost surely, 2^197564265 is an apocalyptic number.

197564265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

197564265 is a deficient number, since it is larger than the sum of its proper divisors (171266967).

197564265 is a wasteful number, since it uses less digits than its factorization.

197564265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 259 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 197564265 is about 14055.7555826786. The cubic root of 197564265 is about 582.4198002155.

The spelling of 197564265 in words is "one hundred ninety-seven million, five hundred sixty-four thousand, two hundred sixty-five".