6651497 has 2 divisors, whose sum is σ = 6651498. Its totient is φ = 6651496.

The previous prime is 6651479. The next prime is 6651503. The reversal of 6651497 is 7941566.

Together with previous prime (6651479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6651241 + 256 = 2579^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 6651497 - 2⁶ = 6651433 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6651497.

It is not a weakly prime, because it can be changed into another prime (6651427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325748 + 3325749.

It is an arithmetic number, because the mean of its divisors is an integer number (3325749).

Almost surely, 2^6651497 is an apocalyptic number.

It is an amenable number.

6651497 is a deficient number, since it is larger than the sum of its proper divisors (1).

6651497 is an equidigital number, since it uses as much as digits as its factorization.

6651497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 6651497 is about 2579.0496311626. The cubic root of 6651497 is about 188.0643453353.

The spelling of 6651497 in words is "six million, six hundred fifty-one thousand, four hundred ninety-seven".