1970345 has 8 divisors (see below), whose sum is σ = 2546376. Its totient is φ = 1454976.

The previous prime is 1970333. The next prime is 1970359. The reversal of 1970345 is 5430791.

It can be written as a sum of positive squares in 4 ways, for example, as 249001 + 1721344 = 499^2 + 1312^2 .

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 1970345 - 2¹⁶ = 1904809 is a prime.

It is a Duffinian number.

It is a Curzon 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, 15092 + ... + 15221.

It is an arithmetic number, because the mean of its divisors is an integer number (318297).

2^1970345 is an apocalyptic number.

It is an amenable number.

1970345 is a deficient number, since it is larger than the sum of its proper divisors (576031).

1970345 is a wasteful number, since it uses less digits than its factorization.

1970345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30331.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1970345 is about 1403.6897805427. The cubic root of 1970345 is about 125.3662856303.

The spelling of 1970345 in words is "one million, nine hundred seventy thousand, three hundred forty-five".