1373705 has 8 divisors (see below), whose sum is σ = 1688904. Its totient is φ = 1072000.

The previous prime is 1373689. The next prime is 1373717. The reversal of 1373705 is 5073731.

It can be written as a sum of positive squares in 4 ways, for example, as 121 + 1373584 = 11^2 + 1172^2 .

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

It is not a de Polignac number, because 1373705 - 2⁴ = 1373689 is a prime.

It is a Duffinian number.

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, 3146 + ... + 3555.

It is an arithmetic number, because the mean of its divisors is an integer number (211113).

2^1373705 is an apocalyptic number.

It is an amenable number.

1373705 is a deficient number, since it is larger than the sum of its proper divisors (315199).

1373705 is an equidigital number, since it uses as much as digits as its factorization.

1373705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747.

The product of its (nonzero) digits is 2205, while the sum is 26.

The square root of 1373705 is about 1172.0516200236. The cubic root of 1373705 is about 111.1640838151.

Adding to 1373705 its sum of digits (26), we get a palindrome (1373731).

The spelling of 1373705 in words is "one million, three hundred seventy-three thousand, seven hundred five".