66477005 has 8 divisors (see below), whose sum is σ = 91168512. Its totient is φ = 45584208.

The previous prime is 66477001. The next prime is 66477017. The reversal of 66477005 is 50077466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66477005 - 2² = 66477001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 1899343 = 66477005 / (6 + 6 + 4 + 7 + 7 + 0 + 0 + 5).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66477001) 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, 949637 + ... + 949706.

It is an arithmetic number, because the mean of its divisors is an integer number (11396064).

Almost surely, 2^66477005 is an apocalyptic number.

It is an amenable number.

66477005 is a deficient number, since it is larger than the sum of its proper divisors (24691507).

66477005 is a wasteful number, since it uses less digits than its factorization.

66477005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899355.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 66477005 is about 8153.3431793345. The cubic root of 66477005 is about 405.0952476279.

The spelling of 66477005 in words is "sixty-six million, four hundred seventy-seven thousand, five".