241661691 has 16 divisors (see below), whose sum is σ = 358682400. Its totient is φ = 160808544.

The previous prime is 241661683. The next prime is 241661701. The reversal of 241661691 is 196166142.

241661691 is a `hidden beast` number, since 24 + 16 + 616 + 9 + 1 = 666.

It is not a de Polignac number, because 241661691 - 2³ = 241661683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (241669691) 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, 7005 + ... + 23073.

It is an arithmetic number, because the mean of its divisors is an integer number (22417650).

Almost surely, 2^241661691 is an apocalyptic number.

241661691 is a deficient number, since it is larger than the sum of its proper divisors (117020709).

241661691 is a wasteful number, since it uses less digits than its factorization.

241661691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16635 (or 16629 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 241661691 is about 15545.4717200862. The cubic root of 241661691 is about 622.8774427479.

The spelling of 241661691 in words is "two hundred forty-one million, six hundred sixty-one thousand, six hundred ninety-one".