1146721 has 8 divisors (see below), whose sum is σ = 1202688. Its totient is φ = 1092000.

The previous prime is 1146713. The next prime is 1146727. The reversal of 1146721 is 1276411.

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 1146721 - 2³ = 1146713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1146692 and 1146701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146727) 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, 1941 + ... + 2461.

It is an arithmetic number, because the mean of its divisors is an integer number (150336).

2^1146721 is an apocalyptic number.

It is an amenable number.

1146721 is a deficient number, since it is larger than the sum of its proper divisors (55967).

1146721 is an equidigital number, since it uses as much as digits as its factorization.

1146721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623.

The product of its digits is 336, while the sum is 22.

The square root of 1146721 is about 1070.8505964886. The cubic root of 1146721 is about 104.6692844671.

The spelling of 1146721 in words is "one million, one hundred forty-six thousand, seven hundred twenty-one".