2685434397 has 4 divisors (see below), whose sum is σ = 3580579200. Its totient is φ = 1790289596.

The previous prime is 2685434387. The next prime is 2685434399. The reversal of 2685434397 is 7934345862.

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 2685434397 - 2⁶ = 2685434333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685434399) 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, 447572397 + ... + 447572402.

It is an arithmetic number, because the mean of its divisors is an integer number (895144800).

Almost surely, 2^2685434397 is an apocalyptic number.

It is an amenable number.

2685434397 is a deficient number, since it is larger than the sum of its proper divisors (895144803).

2685434397 is an equidigital number, since it uses as much as digits as its factorization.

2685434397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895144802.

The product of its digits is 4354560, while the sum is 51.

The square root of 2685434397 is about 51821.1771093633. The cubic root of 2685434397 is about 1389.9681508497.

The spelling of 2685434397 in words is "two billion, six hundred eighty-five million, four hundred thirty-four thousand, three hundred ninety-seven".