66760601 has 4 divisors (see below), whose sum is σ = 67001892. Its totient is φ = 66519312.

The previous prime is 66760567. The next prime is 66760667. The reversal of 66760601 is 10606766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10606766 = 2 ⋅5303383.

It can be written as a sum of positive squares in 2 ways, for example, as 39187600 + 27573001 = 6260^2 + 5251^2 .

It is a cyclic number.

It is not a de Polignac number, because 66760601 - 2⁶ = 66760537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66760301) 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, 120230 + ... + 120783.

It is an arithmetic number, because the mean of its divisors is an integer number (16750473).

Almost surely, 2^66760601 is an apocalyptic number.

It is an amenable number.

66760601 is a deficient number, since it is larger than the sum of its proper divisors (241291).

66760601 is a wasteful number, since it uses less digits than its factorization.

66760601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241290.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 66760601 is about 8170.7160640913. The cubic root of 66760601 is about 405.6704861926.

The spelling of 66760601 in words is "sixty-six million, seven hundred sixty thousand, six hundred one".