546400644 has 24 divisors (see below), whose sum is σ = 1276299360. Its totient is φ = 181938624.

The previous prime is 546400643. The next prime is 546400661. The reversal of 546400644 is 446004645.

It is a super-2 number, since 2×546400644² = 597107327527229472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (546400643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12454 + ... + 35325.

It is an arithmetic number, because the mean of its divisors is an integer number (53179140).

Almost surely, 2^546400644 is an apocalyptic number.

It is an amenable number.

546400644 is an abundant number, since it is smaller than the sum of its proper divisors (729898716).

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

546400644 is a wasteful number, since it uses less digits than its factorization.

546400644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48739 (or 48737 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 546400644 is about 23375.2143091780. The cubic root of 546400644 is about 817.5300672572.

The spelling of 546400644 in words is "five hundred forty-six million, four hundred thousand, six hundred forty-four".