1036721 has 8 divisors (see below), whose sum is σ = 1225920. Its totient is φ = 857808.

The previous prime is 1036681. The next prime is 1036729. The reversal of 1036721 is 1276301.

It is a happy number.

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

It is not a de Polignac number, because 1036721 - 2¹⁴ = 1020337 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1036693 and 1036702.

It is not an unprimeable number, because it can be changed into a prime (1036729) 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, 2351 + ... + 2756.

It is an arithmetic number, because the mean of its divisors is an integer number (153240).

2^1036721 is an apocalyptic number.

It is an amenable number.

1036721 is a deficient number, since it is larger than the sum of its proper divisors (189199).

1036721 is an equidigital number, since it uses as much as digits as its factorization.

1036721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1036721 is about 1018.1949715059. The cubic root of 1036721 is about 101.2093491235.

The spelling of 1036721 in words is "one million, thirty-six thousand, seven hundred twenty-one".