1606620 has 24 divisors (see below), whose sum is σ = 4498704. Its totient is φ = 428416.

The previous prime is 1606603. The next prime is 1606639. The reversal of 1606620 is 266061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13329 + ... + 13448.

It is an arithmetic number, because the mean of its divisors is an integer number (187446).

2^1606620 is an apocalyptic number.

1606620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1606620 is an abundant number, since it is smaller than the sum of its proper divisors (2892084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1606620 is a wasteful number, since it uses less digits than its factorization.

1606620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26789 (or 26787 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1606620 is about 1267.5251476795. The cubic root of 1606620 is about 117.1217958793.

The spelling of 1606620 in words is "one million, six hundred six thousand, six hundred twenty".