1722965 has 8 divisors (see below), whose sum is σ = 2074680. Its totient is φ = 1373632.

The previous prime is 1722937. The next prime is 1722983. The reversal of 1722965 is 5692271.

It can be written as a sum of positive squares in 4 ways, for example, as 964324 + 758641 = 982^2 + 871^2 .

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 1722965 - 2¹² = 1718869 is a prime.

It is a Curzon number.

It is a nialpdrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2207 + ... + 2883.

It is an arithmetic number, because the mean of its divisors is an integer number (259335).

2^1722965 is an apocalyptic number.

It is an amenable number.

1722965 is a deficient number, since it is larger than the sum of its proper divisors (351715).

1722965 is an equidigital number, since it uses as much as digits as its factorization.

1722965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191.

The product of its digits is 7560, while the sum is 32.

The square root of 1722965 is about 1312.6176137779. The cubic root of 1722965 is about 119.8833356895.

The spelling of 1722965 in words is "one million, seven hundred twenty-two thousand, nine hundred sixty-five".