541705661 has 16 divisors (see below), whose sum is σ = 625248000. Its totient is φ = 459727488.

The previous prime is 541705643. The next prime is 541705679. The reversal of 541705661 is 166507145.

It is an interprime number because it is at equal distance from previous prime (541705643) and next prime (541705679).

It is a cyclic number.

It is not a de Polignac number, because 541705661 - 2¹⁴ = 541689277 is a prime.

It is a super-5 number, since 5×541705661⁵ (a number of 45 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541705631) 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, 323735 + ... + 325403.

It is an arithmetic number, because the mean of its divisors is an integer number (39078000).

Almost surely, 2^541705661 is an apocalyptic number.

It is an amenable number.

541705661 is a deficient number, since it is larger than the sum of its proper divisors (83542339).

541705661 is a wasteful number, since it uses less digits than its factorization.

541705661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 541705661 is about 23274.5711238682. The cubic root of 541705661 is about 815.1817683324.

The spelling of 541705661 in words is "five hundred forty-one million, seven hundred five thousand, six hundred sixty-one".