2865397 has 2 divisors, whose sum is σ = 2865398. Its totient is φ = 2865396.

The previous prime is 2865383. The next prime is 2865413. The reversal of 2865397 is 7935682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2842596 + 22801 = 1686^2 + 151^2 .

It is a cyclic number.

It is not a de Polignac number, because 2865397 - 2¹⁵ = 2832629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2865307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432698 + 1432699.

It is an arithmetic number, because the mean of its divisors is an integer number (1432699).

2^2865397 is an apocalyptic number.

It is an amenable number.

2865397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2865397 is an equidigital number, since it uses as much as digits as its factorization.

2865397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 2865397 is about 1692.7483569627. The cubic root of 2865397 is about 142.0348555579.

The spelling of 2865397 in words is "two million, eight hundred sixty-five thousand, three hundred ninety-seven".