1621246 has 8 divisors (see below), whose sum is σ = 2652984. Its totient is φ = 736920.

The previous prime is 1621241. The next prime is 1621259. The reversal of 1621246 is 6421261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 73693 = 1621246 / (1 + 6 + 2 + 1 + 2 + 4 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36825 + ... + 36868.

It is an arithmetic number, because the mean of its divisors is an integer number (331623).

2^1621246 is an apocalyptic number.

1621246 is a deficient number, since it is larger than the sum of its proper divisors (1031738).

1621246 is a wasteful number, since it uses less digits than its factorization.

1621246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73706.

The product of its digits is 576, while the sum is 22.

The square root of 1621246 is about 1273.2815870812. The cubic root of 1621246 is about 117.4761321673.

The spelling of 1621246 in words is "one million, six hundred twenty-one thousand, two hundred forty-six".