197767969 has 21 divisors (see below), whose sum is σ = 236493811. Its totient is φ = 165380880.

The previous prime is 197767951. The next prime is 197767981. The reversal of 197767969 is 969767791.

The square root of 197767969 is 14063.

It is a perfect power (a square), and thus also a powerful number.

197767969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9529569 + 188238400 = 3087^2 + 13720^2 .

It is not a de Polignac number, because 197767969 - 2⁷ = 197767841 is a prime.

It is a super-2 number, since 2×197767969² = 78224339124769922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197767169) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 4823589 + ... + 4823629.

Almost surely, 2^197767969 is an apocalyptic number.

197767969 is the 14063-rd square number.

197767969 is the 7032-nd centered octagonal number.

It is an amenable number.

197767969 is a deficient number, since it is larger than the sum of its proper divisors (38725842).

197767969 is an frugal number, since it uses more digits than its factorization.

197767969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 48 counting only the distinct ones).

The product of its digits is 9001692, while the sum is 61.

The cubic root of 197767969 is about 582.6199047068.

The spelling of 197767969 in words is "one hundred ninety-seven million, seven hundred sixty-seven thousand, nine hundred sixty-nine".