542603665 has 16 divisors (see below), whose sum is σ = 664339968. Its totient is φ = 425295936.

The previous prime is 542603647. The next prime is 542603669. The reversal of 542603665 is 566306245.

It is a cyclic number.

It is not a de Polignac number, because 542603665 - 2¹¹ = 542601617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542603669) 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, 350884 + ... + 352426.

It is an arithmetic number, because the mean of its divisors is an integer number (41521248).

Almost surely, 2^542603665 is an apocalyptic number.

It is an amenable number.

542603665 is a deficient number, since it is larger than the sum of its proper divisors (121736303).

542603665 is a wasteful number, since it uses less digits than its factorization.

542603665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 542603665 is about 23293.8546616914. The cubic root of 542603665 is about 815.6319712170.

The spelling of 542603665 in words is "five hundred forty-two million, six hundred three thousand, six hundred sixty-five".