1064721 has 12 divisors (see below), whose sum is σ = 1651632. Its totient is φ = 608328.

The previous prime is 1064699. The next prime is 1064731. The reversal of 1064721 is 1274601.

It is not a de Polignac number, because 1064721 - 2⁵ = 1064689 is a prime.

It is a super-2 number, since 2×1064721² = 2267261615682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1064731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3475 + ... + 3768.

It is an arithmetic number, because the mean of its divisors is an integer number (137636).

2^1064721 is an apocalyptic number.

It is an amenable number.

1064721 is a deficient number, since it is larger than the sum of its proper divisors (586911).

1064721 is an equidigital number, since it uses as much as digits as its factorization.

1064721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7260 (or 7253 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 1064721 is about 1031.8531872316. The cubic root of 1064721 is about 102.1124288947.

The spelling of 1064721 in words is "one million, sixty-four thousand, seven hundred twenty-one".