66474601 has 4 divisors (see below), whose sum is σ = 66516100. Its totient is φ = 66433104.

The previous prime is 66474599. The next prime is 66474647. The reversal of 66474601 is 10647466.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51108201 + 15366400 = 7149^2 + 3920^2 .

It is a cyclic number.

It is not a de Polignac number, because 66474601 - 2¹ = 66474599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66474691) 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, 18246 + ... + 21583.

It is an arithmetic number, because the mean of its divisors is an integer number (16629025).

Almost surely, 2^66474601 is an apocalyptic number.

It is an amenable number.

66474601 is a deficient number, since it is larger than the sum of its proper divisors (41499).

66474601 is a wasteful number, since it uses less digits than its factorization.

66474601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41498.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 66474601 is about 8153.1957538133. The cubic root of 66474601 is about 405.0903644320.

The spelling of 66474601 in words is "sixty-six million, four hundred seventy-four thousand, six hundred one".