727144745 has 8 divisors (see below), whose sum is σ = 873069000. Its totient is φ = 581385600.

The previous prime is 727144729. The next prime is 727144783. The reversal of 727144745 is 547441727.

It can be written as a sum of positive squares in 4 ways, for example, as 101344489 + 625800256 = 10067^2 + 25016^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 727144745 - 2⁴ = 727144729 is a prime.

It is a super-2 number, since 2×727144745² = 1057478960362230050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31370 + ... + 49379.

It is an arithmetic number, because the mean of its divisors is an integer number (109133625).

Almost surely, 2^727144745 is an apocalyptic number.

It is an amenable number.

727144745 is a deficient number, since it is larger than the sum of its proper divisors (145924255).

727144745 is a wasteful number, since it uses less digits than its factorization.

727144745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82555.

The product of its digits is 219520, while the sum is 41.

The square root of 727144745 is about 26965.6215392859. The cubic root of 727144745 is about 899.2358719913.

The spelling of 727144745 in words is "seven hundred twenty-seven million, one hundred forty-four thousand, seven hundred forty-five".