542688613 has 2 divisors, whose sum is σ = 542688614. Its totient is φ = 542688612.

The previous prime is 542688607. The next prime is 542688623. The reversal of 542688613 is 316886245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 413593569 + 129095044 = 20337^2 + 11362^2 .

It is a cyclic number.

It is not a de Polignac number, because 542688613 - 2⁵ = 542688581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 542688613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542688623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271344306 + 271344307.

It is an arithmetic number, because the mean of its divisors is an integer number (271344307).

Almost surely, 2^542688613 is an apocalyptic number.

It is an amenable number.

542688613 is a deficient number, since it is larger than the sum of its proper divisors (1).

542688613 is an equidigital number, since it uses as much as digits as its factorization.

542688613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 43.

The square root of 542688613 is about 23295.6779897044. The cubic root of 542688613 is about 815.6745330927.

The spelling of 542688613 in words is "five hundred forty-two million, six hundred eighty-eight thousand, six hundred thirteen".