66465544 has 16 divisors (see below), whose sum is σ = 126201600. Its totient is φ = 32811792.

The previous prime is 66465527. The next prime is 66465547. The reversal of 66465544 is 44556466.

It is a junction number, because it is equal to n+sod(n) for n = 66465497 and 66465506.

It is not an unprimeable number, because it can be changed into a prime (66465547) 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, 51952 + ... + 53215.

It is an arithmetic number, because the mean of its divisors is an integer number (7887600).

Almost surely, 2^66465544 is an apocalyptic number.

It is an amenable number.

66465544 is a deficient number, since it is larger than the sum of its proper divisors (59736056).

66465544 is a wasteful number, since it uses less digits than its factorization.

66465544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105252 (or 105248 counting only the distinct ones).

The product of its digits is 345600, while the sum is 40.

The square root of 66465544 is about 8152.6403085136. The cubic root of 66465544 is about 405.0719660763.

The spelling of 66465544 in words is "sixty-six million, four hundred sixty-five thousand, five hundred forty-four".