542645688 has 64 divisors (see below), whose sum is σ = 1464422400. Its totient is φ = 166573440.

The previous prime is 542645683. The next prime is 542645689. The reversal of 542645688 is 886546245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542645683) 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, 147633 + ... + 151263.

It is an arithmetic number, because the mean of its divisors is an integer number (22881600).

Almost surely, 2^542645688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542645688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732211200).

542645688 is an abundant number, since it is smaller than the sum of its proper divisors (921776712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

542645688 is a wasteful number, since it uses less digits than its factorization.

542645688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4132 (or 4128 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 48.

The square root of 542645688 is about 23294.7566632494. The cubic root of 542645688 is about 815.6530267435.

The spelling of 542645688 in words is "five hundred forty-two million, six hundred forty-five thousand, six hundred eighty-eight".