1084721 has 8 divisors (see below), whose sum is σ = 1221888. Its totient is φ = 954000.

The previous prime is 1084711. The next prime is 1084723. The reversal of 1084721 is 1274801.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1084721 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 (1084723) 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, 1250 + ... + 1931.

It is an arithmetic number, because the mean of its divisors is an integer number (152736).

2^1084721 is an apocalyptic number.

1084721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1084721 is a deficient number, since it is larger than the sum of its proper divisors (137167).

1084721 is a wasteful number, since it uses less digits than its factorization.

1084721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1084721 is about 1041.4993999038. The cubic root of 1084721 is about 102.7478357277.

The spelling of 1084721 in words is "one million, eighty-four thousand, seven hundred twenty-one".