648916273 has 8 divisors (see below), whose sum is σ = 698973696. Its totient is φ = 600679200.

The previous prime is 648916271. The next prime is 648916277. The reversal of 648916273 is 372619846.

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 648916273 - 2¹ = 648916271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648916271) 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, 454348 + ... + 455773.

It is an arithmetic number, because the mean of its divisors is an integer number (87371712).

Almost surely, 2^648916273 is an apocalyptic number.

It is an amenable number.

648916273 is a deficient number, since it is larger than the sum of its proper divisors (50057423).

648916273 is a wasteful number, since it uses less digits than its factorization.

648916273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910175.

The product of its digits is 435456, while the sum is 46.

The square root of 648916273 is about 25473.8350665933. The cubic root of 648916273 is about 865.7574187167.

The spelling of 648916273 in words is "six hundred forty-eight million, nine hundred sixteen thousand, two hundred seventy-three".