1970505 has 12 divisors (see below), whose sum is σ = 3415620. Its totient is φ = 1050912.

The previous prime is 1970491. The next prime is 1970513. The reversal of 1970505 is 5050791.

It can be written as a sum of positive squares in 2 ways, for example, as 1218816 + 751689 = 1104^2 + 867^2 .

It is not a de Polignac number, because 1970505 - 2⁵ = 1970473 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 21850 + ... + 21939.

It is an arithmetic number, because the mean of its divisors is an integer number (284635).

2^1970505 is an apocalyptic number.

1970505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1970505 is a deficient number, since it is larger than the sum of its proper divisors (1445115).

1970505 is a wasteful number, since it uses less digits than its factorization.

1970505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43800 (or 43797 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 27.

The square root of 1970505 is about 1403.7467720355. The cubic root of 1970505 is about 125.3696789553.

The spelling of 1970505 in words is "one million, nine hundred seventy thousand, five hundred five".