1622247 has 24 divisors (see below), whose sum is σ = 2457840. Its totient is φ = 950400.

The previous prime is 1622233. The next prime is 1622263. The reversal of 1622247 is 7422261.

It is not a de Polignac number, because 1622247 - 2¹⁸ = 1360103 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14829 + ... + 14937.

It is an arithmetic number, because the mean of its divisors is an integer number (102410).

2^1622247 is an apocalyptic number.

1622247 is a deficient number, since it is larger than the sum of its proper divisors (835593).

1622247 is a wasteful number, since it uses less digits than its factorization.

1622247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 164 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 1622247 is about 1273.6746052269. The cubic root of 1622247 is about 117.5003048129.

The spelling of 1622247 in words is "one million, six hundred twenty-two thousand, two hundred forty-seven".