2570397 has 4 divisors (see below), whose sum is σ = 3427200. Its totient is φ = 1713596.

The previous prime is 2570389. The next prime is 2570401. The reversal of 2570397 is 7930752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2570397 - 2³ = 2570389 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2570317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428397 + ... + 428402.

It is an arithmetic number, because the mean of its divisors is an integer number (856800).

2^2570397 is an apocalyptic number.

It is an amenable number.

2570397 is a deficient number, since it is larger than the sum of its proper divisors (856803).

2570397 is an equidigital number, since it uses as much as digits as its factorization.

2570397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856802.

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 2570397 is about 1603.2457703047. The cubic root of 2570397 is about 136.9830195446.

The spelling of 2570397 in words is "two million, five hundred seventy thousand, three hundred ninety-seven".