2685407 has 2 divisors, whose sum is σ = 2685408. Its totient is φ = 2685406.

The previous prime is 2685401. The next prime is 2685409. The reversal of 2685407 is 7045862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2685407 - 2⁶ = 2685343 is a prime.

It is a super-2 number, since 2×2685407² = 14422821511298, which contains 22 as substring.

Together with 2685409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2685401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342703 + 1342704.

It is an arithmetic number, because the mean of its divisors is an integer number (1342704).

2^2685407 is an apocalyptic number.

2685407 is a deficient number, since it is larger than the sum of its proper divisors (1).

2685407 is an equidigital number, since it uses as much as digits as its factorization.

2685407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 2685407 is about 1638.7211477247. The cubic root of 2685407 is about 138.9963423981.

The spelling of 2685407 in words is "two million, six hundred eighty-five thousand, four hundred seven".