542668687 has 4 divisors (see below), whose sum is σ = 592002216. Its totient is φ = 493335160.

The previous prime is 542668673. The next prime is 542668703. The reversal of 542668687 is 786866245.

542668687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 542668687 - 2⁷ = 542668559 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 (542608687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24666748 + ... + 24666769.

It is an arithmetic number, because the mean of its divisors is an integer number (148000554).

Almost surely, 2^542668687 is an apocalyptic number.

542668687 is a deficient number, since it is larger than the sum of its proper divisors (49333529).

542668687 is a wasteful number, since it uses less digits than its factorization.

542668687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49333528.

The product of its digits is 3870720, while the sum is 52.

The square root of 542668687 is about 23295.2503098808. The cubic root of 542668687 is about 815.6645498787.

The spelling of 542668687 in words is "five hundred forty-two million, six hundred sixty-eight thousand, six hundred eighty-seven".