1970591 has 8 divisors (see below), whose sum is σ = 2265120. Its totient is φ = 1679328.

The previous prime is 1970581. The next prime is 1970597. The reversal of 1970591 is 1950791.

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

It is not a de Polignac number, because 1970591 - 2¹⁰ = 1969567 is a prime.

It is a Duffinian number.

1970591 is a modest number, since divided by 591 gives 197 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970597) 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, 665 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (283140).

2^1970591 is an apocalyptic number.

1970591 is a deficient number, since it is larger than the sum of its proper divisors (294529).

1970591 is a wasteful number, since it uses less digits than its factorization.

1970591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633.

The product of its (nonzero) digits is 2835, while the sum is 32.

The square root of 1970591 is about 1403.7774040068. Note that the first 3 decimals coincide. The cubic root of 1970591 is about 125.3715027916.

The spelling of 1970591 in words is "one million, nine hundred seventy thousand, five hundred ninety-one".