1626461 has 2 divisors, whose sum is σ = 1626462. Its totient is φ = 1626460.

The previous prime is 1626451. The next prime is 1626467. The reversal of 1626461 is 1646261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1223236 + 403225 = 1106^2 + 635^2 .

It is an emirp because it is prime and its reverse (1646261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1626461 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 1626461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1626467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813230 + 813231.

It is an arithmetic number, because the mean of its divisors is an integer number (813231).

2^1626461 is an apocalyptic number.

It is an amenable number.

1626461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1626461 is an equidigital number, since it uses as much as digits as its factorization.

1626461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 1626461 is about 1275.3278009986. The cubic root of 1626461 is about 117.6019576779.

The spelling of 1626461 in words is "one million, six hundred twenty-six thousand, four hundred sixty-one".