2613997 has 2 divisors, whose sum is σ = 2613998. Its totient is φ = 2613996.

The previous prime is 2613991. The next prime is 2614043. The reversal of 2613997 is 7993162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1943236 + 670761 = 1394^2 + 819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2613997 is a prime.

2613997 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2613991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1306998 + 1306999.

It is an arithmetic number, because the mean of its divisors is an integer number (1306999).

2^2613997 is an apocalyptic number.

It is an amenable number.

2613997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2613997 is an equidigital number, since it uses as much as digits as its factorization.

2613997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 2613997 is about 1616.7860093408. The cubic root of 2613997 is about 137.7531995748.

The spelling of 2613997 in words is "two million, six hundred thirteen thousand, nine hundred ninety-seven".