1973365 has 4 divisors (see below), whose sum is σ = 2368044. Its totient is φ = 1578688.

The previous prime is 1973353. The next prime is 1973369. The reversal of 1973365 is 5633791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1535121 + 438244 = 1239^2 + 662^2 .

It is a cyclic number.

It is not a de Polignac number, because 1973365 - 2¹⁵ = 1940597 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1973365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197332 + ... + 197341.

It is an arithmetic number, because the mean of its divisors is an integer number (592011).

2^1973365 is an apocalyptic number.

It is an amenable number.

1973365 is a deficient number, since it is larger than the sum of its proper divisors (394679).

1973365 is an equidigital number, since it uses as much as digits as its factorization.

1973365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394678.

The product of its digits is 17010, while the sum is 34.

The square root of 1973365 is about 1404.7651049197. The cubic root of 1973365 is about 125.4303036769.

The spelling of 1973365 in words is "one million, nine hundred seventy-three thousand, three hundred sixty-five".