1622407 has 2 divisors, whose sum is σ = 1622408. Its totient is φ = 1622406.

The previous prime is 1622377. The next prime is 1622419. The reversal of 1622407 is 7042261.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1622407 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1622437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811203 + 811204.

It is an arithmetic number, because the mean of its divisors is an integer number (811204).

2^1622407 is an apocalyptic number.

1622407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1622407 is an equidigital number, since it uses as much as digits as its factorization.

1622407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1622407 is about 1273.7374140693. The cubic root of 1622407 is about 117.5041676506.

Adding to 1622407 its reverse (7042261), we get a palindrome (8664668).

The spelling of 1622407 in words is "one million, six hundred twenty-two thousand, four hundred seven".