660272903 has 4 divisors (see below), whose sum is σ = 660324480. Its totient is φ = 660221328.

The previous prime is 660272867. The next prime is 660272917. The reversal of 660272903 is 309272066.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 660272903 - 2¹⁶ = 660207367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660272923) 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, 9626 + ... + 37592.

It is an arithmetic number, because the mean of its divisors is an integer number (165081120).

Almost surely, 2^660272903 is an apocalyptic number.

660272903 is a deficient number, since it is larger than the sum of its proper divisors (51577).

660272903 is a wasteful number, since it uses less digits than its factorization.

660272903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51576.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 660272903 is about 25695.7759758292. The cubic root of 660272903 is about 870.7787553035.

The spelling of 660272903 in words is "six hundred sixty million, two hundred seventy-two thousand, nine hundred three".