1620046 has 4 divisors (see below), whose sum is σ = 2430072. Its totient is φ = 810022.

The previous prime is 1620041. The next prime is 1620071. The reversal of 1620046 is 6400261.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405010 + ... + 405013.

It is an arithmetic number, because the mean of its divisors is an integer number (607518).

2^1620046 is an apocalyptic number.

1620046 is a deficient number, since it is larger than the sum of its proper divisors (810026).

1620046 is an equidigital number, since it uses as much as digits as its factorization.

1620046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810025.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1620046 is about 1272.8102765141. The cubic root of 1620046 is about 117.4471408536.

The spelling of 1620046 in words is "one million, six hundred twenty thousand, forty-six".