197936761 has 9 divisors (see below), whose sum is σ = 217737093. Its totient is φ = 179801820.

The previous prime is 197936741. The next prime is 197936771. The reversal of 197936761 is 167639791.

The square root of 197936761 is 14069.

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

It is not a de Polignac number, because 197936761 - 2¹¹ = 197934713 is a prime.

It is a super-2 number, since 2×197936761² = 78357922710342242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197936731) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 154120 + ... + 155398.

Almost surely, 2^197936761 is an apocalyptic number.

197936761 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

197936761 is the 14069-th square number.

197936761 is the 7035-th centered octagonal number.

It is an amenable number.

197936761 is a deficient number, since it is larger than the sum of its proper divisors (19800332).

197936761 is an frugal number, since it uses more digits than its factorization.

197936761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580 (or 1290 counting only the distinct ones).

The product of its digits is 428652, while the sum is 49.

The cubic root of 197936761 is about 582.7856100280.

Multiplying 197936761 by its sum of digits (49), we get a square (9698901289 = 98483²).

The spelling of 197936761 in words is "one hundred ninety-seven million, nine hundred thirty-six thousand, seven hundred sixty-one".