727746973 has 4 divisors (see below), whose sum is σ = 736959040. Its totient is φ = 718534908.

The previous prime is 727746937. The next prime is 727746983. The reversal of 727746973 is 379647727.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 379647727 = 83 ⋅4574069.

It is a cyclic number.

It is not a de Polignac number, because 727746973 - 2²⁹ = 190876061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 727746973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727746983) 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, 4605915 + ... + 4606072.

It is an arithmetic number, because the mean of its divisors is an integer number (184239760).

Almost surely, 2^727746973 is an apocalyptic number.

It is an amenable number.

727746973 is a deficient number, since it is larger than the sum of its proper divisors (9212067).

727746973 is an equidigital number, since it uses as much as digits as its factorization.

727746973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9212066.

The product of its digits is 3111696, while the sum is 52.

The square root of 727746973 is about 26976.7858166980. The cubic root of 727746973 is about 899.4840553087.

The spelling of 727746973 in words is "seven hundred twenty-seven million, seven hundred forty-six thousand, nine hundred seventy-three".