141694661 has 4 divisors (see below), whose sum is σ = 141730572. Its totient is φ = 141658752.

The previous prime is 141694633. The next prime is 141694691. The reversal of 141694661 is 166496141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166496141 = 7 ⋅23785163.

It can be written as a sum of positive squares in 2 ways, for example, as 18062500 + 123632161 = 4250^2 + 11119^2 .

It is a cyclic number.

It is not a de Polignac number, because 141694661 - 2¹⁰ = 141693637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141694601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11186 + ... + 20211.

It is an arithmetic number, because the mean of its divisors is an integer number (35432643).

Almost surely, 2^141694661 is an apocalyptic number.

It is an amenable number.

141694661 is a deficient number, since it is larger than the sum of its proper divisors (35911).

141694661 is an equidigital number, since it uses as much as digits as its factorization.

141694661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35910.

The product of its digits is 31104, while the sum is 38.

The square root of 141694661 is about 11903.5566533705. The cubic root of 141694661 is about 521.3361361064.

The spelling of 141694661 in words is "one hundred forty-one million, six hundred ninety-four thousand, six hundred sixty-one".