721411 has 8 divisors (see below), whose sum is σ = 777920. Its totient is φ = 666792.

The previous prime is 721397. The next prime is 721439. The reversal of 721411 is 114127.

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 721411 - 2⁵ = 721379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (721451) 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, 376 + ... + 1258.

It is an arithmetic number, because the mean of its divisors is an integer number (97240).

2⁷²¹⁴¹¹ is an apocalyptic number.

721411 is a deficient number, since it is larger than the sum of its proper divisors (56509).

721411 is a wasteful number, since it uses less digits than its factorization.

721411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945.

The product of its digits is 56, while the sum is 16.

The square root of 721411 is about 849.3591701983. The cubic root of 721411 is about 89.6866054494.

Adding to 721411 its reverse (114127), we get a palindrome (835538).

It can be divided in two parts, 7214 and 11, that added together give a square (7225 = 85²).

The spelling of 721411 in words is "seven hundred twenty-one thousand, four hundred eleven", and thus it is an iban number.