6451897 has 2 divisors, whose sum is σ = 6451898. Its totient is φ = 6451896.

The previous prime is 6451889. The next prime is 6451919. The reversal of 6451897 is 7981546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6295081 + 156816 = 2509^2 + 396^2 .

It is a cyclic number.

It is not a de Polignac number, because 6451897 - 2³ = 6451889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6451807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3225948 + 3225949.

It is an arithmetic number, because the mean of its divisors is an integer number (3225949).

Almost surely, 2^6451897 is an apocalyptic number.

It is an amenable number.

6451897 is a deficient number, since it is larger than the sum of its proper divisors (1).

6451897 is an equidigital number, since it uses as much as digits as its factorization.

6451897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 6451897 is about 2540.0584638941. The cubic root of 6451897 is about 186.1640457398.

The spelling of 6451897 in words is "six million, four hundred fifty-one thousand, eight hundred ninety-seven".