66413552 has 10 divisors (see below), whose sum is σ = 128676288. Its totient is φ = 33206768.

The previous prime is 66413551. The next prime is 66413593. The reversal of 66413552 is 25531466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66413551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2075408 + ... + 2075439.

Almost surely, 2^66413552 is an apocalyptic number.

It is an amenable number.

66413552 is a deficient number, since it is larger than the sum of its proper divisors (62262736).

66413552 is a wasteful number, since it uses less digits than its factorization.

66413552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150855 (or 4150849 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 66413552 is about 8149.4510244556. The cubic root of 66413552 is about 404.9663173736.

The spelling of 66413552 in words is "sixty-six million, four hundred thirteen thousand, five hundred fifty-two".