141689561 has 8 divisors (see below), whose sum is σ = 157511424. Its totient is φ = 126570960.

The previous prime is 141689557. The next prime is 141689579. The reversal of 141689561 is 165986141.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 141689561 - 2² = 141689557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141689501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175391 + ... + 176196.

It is an arithmetic number, because the mean of its divisors is an integer number (19688928).

Almost surely, 2^141689561 is an apocalyptic number.

It is an amenable number.

141689561 is a deficient number, since it is larger than the sum of its proper divisors (15821863).

141689561 is a wasteful number, since it uses less digits than its factorization.

141689561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351631.

The product of its digits is 51840, while the sum is 41.

The square root of 141689561 is about 11903.3424297548. The cubic root of 141689561 is about 521.3298812337.

The spelling of 141689561 in words is "one hundred forty-one million, six hundred eighty-nine thousand, five hundred sixty-one".