720017873 has 8 divisors (see below), whose sum is σ = 750193920. Its totient is φ = 690276240.

The previous prime is 720017849. The next prime is 720017899. The reversal of 720017873 is 378710027.

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 720017873 - 2¹⁴ = 720001489 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 (720010873) 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, 105218 + ... + 111851.

It is an arithmetic number, because the mean of its divisors is an integer number (93774240).

Almost surely, 2^720017873 is an apocalyptic number.

It is an amenable number.

720017873 is a deficient number, since it is larger than the sum of its proper divisors (30176047).

720017873 is a wasteful number, since it uses less digits than its factorization.

720017873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217207.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 720017873 is about 26833.1487716220. The cubic root of 720017873 is about 896.2883655600.

The spelling of 720017873 in words is "seven hundred twenty million, seventeen thousand, eight hundred seventy-three".