66477084 has 24 divisors (see below), whose sum is σ = 161857920. Its totient is φ = 21195504.

The previous prime is 66477083. The next prime is 66477091. The reversal of 66477084 is 48077466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66477083) 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, 120154 + ... + 120705.

It is an arithmetic number, because the mean of its divisors is an integer number (6744080).

Almost surely, 2^66477084 is an apocalyptic number.

It is an amenable number.

66477084 is an abundant number, since it is smaller than the sum of its proper divisors (95380836).

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

66477084 is a wasteful number, since it uses less digits than its factorization.

66477084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240889 (or 240887 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 66477084 is about 8153.3480239715. The cubic root of 66477084 is about 405.0954080970.

It can be divided in two parts, 6647 and 7084, that added together give a palindrome (13731).

The spelling of 66477084 in words is "sixty-six million, four hundred seventy-seven thousand, eighty-four".