197007261 has 16 divisors (see below), whose sum is σ = 287634240. Its totient is φ = 118949120.

The previous prime is 197007241. The next prime is 197007287. The reversal of 197007261 is 162700791.

It is a cyclic number.

It is not a de Polignac number, because 197007261 - 2⁵ = 197007229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197007241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2220 + ... + 19973.

It is an arithmetic number, because the mean of its divisors is an integer number (17977140).

Almost surely, 2^197007261 is an apocalyptic number.

197007261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

197007261 is a deficient number, since it is larger than the sum of its proper divisors (90626979).

197007261 is a wasteful number, since it uses less digits than its factorization.

197007261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22476.

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 197007261 is about 14035.9275076498. The cubic root of 197007261 is about 581.8719354270.

The spelling of 197007261 in words is "one hundred ninety-seven million, seven thousand, two hundred sixty-one".