66003427 has 8 divisors (see below), whose sum is σ = 75896576. Its totient is φ = 56226312.

The previous prime is 66003419. The next prime is 66003437. The reversal of 66003427 is 72430066.

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 66003427 - 2³ = 66003419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66003395 and 66003404.

It is not an unprimeable number, because it can be changed into a prime (66003437) 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, 27783 + ... + 30064.

It is an arithmetic number, because the mean of its divisors is an integer number (9487072).

Almost surely, 2^66003427 is an apocalyptic number.

66003427 is a deficient number, since it is larger than the sum of its proper divisors (9893149).

66003427 is a wasteful number, since it uses less digits than its factorization.

66003427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58017.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 66003427 is about 8124.2493191679. The cubic root of 66003427 is about 404.1309965520.

It can be divided in two parts, 66003 and 427, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 66003427 in words is "sixty-six million, three thousand, four hundred twenty-seven".