1305973 has 8 divisors (see below), whose sum is σ = 1365336. Its totient is φ = 1248000.

The previous prime is 1305971. The next prime is 1306001. The reversal of 1305973 is 3795031.

It can be written as a sum of positive squares in 4 ways, for example, as 209764 + 1096209 = 458^2 + 1047^2 .

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 1305973 - 2¹ = 1305971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305971) 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, 1873 + ... + 2473.

It is an arithmetic number, because the mean of its divisors is an integer number (170667).

2^1305973 is an apocalyptic number.

It is an amenable number.

1305973 is a deficient number, since it is larger than the sum of its proper divisors (59363).

1305973 is an equidigital number, since it uses as much as digits as its factorization.

1305973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 1305973 is about 1142.7917570581. The cubic root of 1305973 is about 109.3061839771.

It can be divided in two parts, 1305 and 973, that added together give a triangular number (2278 = T₆₇).

The spelling of 1305973 in words is "one million, three hundred five thousand, nine hundred seventy-three".