13542661 has 8 divisors (see below), whose sum is σ = 14802624. Its totient is φ = 12287520.

The previous prime is 13542647. The next prime is 13542673. The reversal of 13542661 is 16624531.

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 13542661 - 2¹⁹ = 13018373 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 (13542161) 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, 7345 + ... + 9001.

It is an arithmetic number, because the mean of its divisors is an integer number (1850328).

Almost surely, 2^13542661 is an apocalyptic number.

13542661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13542661 is a deficient number, since it is larger than the sum of its proper divisors (1259963).

13542661 is a wasteful number, since it uses less digits than its factorization.

13542661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411.

The product of its digits is 4320, while the sum is 28.

The square root of 13542661 is about 3680.0354617857. The cubic root of 13542661 is about 238.3607093053.

The spelling of 13542661 in words is "thirteen million, five hundred forty-two thousand, six hundred sixty-one".