66083477 has 4 divisors (see below), whose sum is σ = 66194400. Its totient is φ = 65972556.

The previous prime is 66083449. The next prime is 66083491. The reversal of 66083477 is 77438066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77438066 = 2 ⋅38719033.

It is a cyclic number.

It is not a de Polignac number, because 66083477 - 2¹⁰ = 66082453 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66083497) 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, 54563 + ... + 55760.

It is an arithmetic number, because the mean of its divisors is an integer number (16548600).

Almost surely, 2^66083477 is an apocalyptic number.

It is an amenable number.

66083477 is a deficient number, since it is larger than the sum of its proper divisors (110923).

66083477 is a wasteful number, since it uses less digits than its factorization.

66083477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110922.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 66083477 is about 8129.1744353286. The cubic root of 66083477 is about 404.2943093681.

The spelling of 66083477 in words is "sixty-six million, eighty-three thousand, four hundred seventy-seven".