66003273 has 12 divisors (see below), whose sum is σ = 108957888. Its totient is φ = 37716120.

The previous prime is 66003263. The next prime is 66003277. The reversal of 66003273 is 37230066.

It is not a de Polignac number, because 66003273 - 2⁴ = 66003257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66003277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 523773 + ... + 523898.

It is an arithmetic number, because the mean of its divisors is an integer number (9079824).

Almost surely, 2^66003273 is an apocalyptic number.

66003273 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

66003273 is a deficient number, since it is larger than the sum of its proper divisors (42954615).

66003273 is a wasteful number, since it uses less digits than its factorization.

66003273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047684 (or 1047681 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 66003273 is about 8124.2398413636. The cubic root of 66003273 is about 404.1306822440.

The spelling of 66003273 in words is "sixty-six million, three thousand, two hundred seventy-three".