541626661 has 8 divisors (see below), whose sum is σ = 545245344. Its totient is φ = 538018320.

The previous prime is 541626643. The next prime is 541626689. The reversal of 541626661 is 166626145.

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 541626661 - 2⁵ = 541626629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 541626661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541626601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121671 + ... + 126043.

It is an arithmetic number, because the mean of its divisors is an integer number (68155668).

Almost surely, 2^541626661 is an apocalyptic number.

It is an amenable number.

541626661 is a deficient number, since it is larger than the sum of its proper divisors (3618683).

541626661 is a wasteful number, since it uses less digits than its factorization.

541626661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171.

The product of its digits is 51840, while the sum is 37.

The square root of 541626661 is about 23272.8739308234. The cubic root of 541626661 is about 815.1421388835.

The spelling of 541626661 in words is "five hundred forty-one million, six hundred twenty-six thousand, six hundred sixty-one".