1970545 has 8 divisors (see below), whose sum is σ = 2376360. Its totient is φ = 1568640.

The previous prime is 1970543. The next prime is 1970567. The reversal of 1970545 is 5450791.

It can be written as a sum of positive squares in 4 ways, for example, as 829921 + 1140624 = 911^2 + 1068^2 .

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

It is not a de Polignac number, because 1970545 - 2¹ = 1970543 is a prime.

1970545 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970543) 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, 285 + ... + 2005.

It is an arithmetic number, because the mean of its divisors is an integer number (297045).

2^1970545 is an apocalyptic number.

It is an amenable number.

1970545 is a deficient number, since it is larger than the sum of its proper divisors (405815).

1970545 is a wasteful number, since it uses less digits than its factorization.

1970545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 1970545 is about 1403.7610195471. The cubic root of 1970545 is about 125.3705272579.

The spelling of 1970545 in words is "one million, nine hundred seventy thousand, five hundred forty-five".