727408081 has 4 divisors (see below), whose sum is σ = 744324592. Its totient is φ = 710491572.

The previous prime is 727408069. The next prime is 727408091. The reversal of 727408081 is 180804727.

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.

It is a cyclic number.

It is not a de Polignac number, because 727408081 - 2¹³ = 727399889 is a prime.

It is a super-2 number, since 2×727408081² = 1058245032608205122, which contains 22 as substring.

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 727408081.

It is not an unprimeable number, because it can be changed into a prime (727408001) 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, 8458191 + ... + 8458276.

It is an arithmetic number, because the mean of its divisors is an integer number (186081148).

Almost surely, 2^727408081 is an apocalyptic number.

It is an amenable number.

727408081 is a deficient number, since it is larger than the sum of its proper divisors (16916511).

727408081 is a wasteful number, since it uses less digits than its factorization.

727408081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16916510.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 727408081 is about 26970.5039070463. The cubic root of 727408081 is about 899.3444118655.

The spelling of 727408081 in words is "seven hundred twenty-seven million, four hundred eight thousand, eighty-one".