2061397 has 8 divisors (see below), whose sum is σ = 2232216. Its totient is φ = 1892352.

The previous prime is 2061391. The next prime is 2061413. The reversal of 2061397 is 7931602.

It can be written as a sum of positive squares in 4 ways, for example, as 98596 + 1962801 = 314^2 + 1401^2 .

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 2061397 - 2¹⁵ = 2028629 is a prime.

It is a Duffinian number.

2061397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3033 + ... + 3649.

It is an arithmetic number, because the mean of its divisors is an integer number (279027).

2^2061397 is an apocalyptic number.

It is an amenable number.

2061397 is a deficient number, since it is larger than the sum of its proper divisors (170819).

2061397 is a wasteful number, since it uses less digits than its factorization.

2061397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 2061397 is about 1435.7565949701. The cubic root of 2061397 is about 127.2683889523.

Adding to 2061397 its reverse (7931602), we get a palindrome (9992999).

It can be divided in two parts, 206 and 1397, that multiplied together give a palindrome (287782).

The spelling of 2061397 in words is "two million, sixty-one thousand, three hundred ninety-seven".