1608720 has 40 divisors (see below), whose sum is σ = 4987776. Its totient is φ = 428928.

The previous prime is 1608713. The next prime is 1608743. The reversal of 1608720 is 278061.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 3112 + ... + 3591.

2^1608720 is an apocalyptic number.

1608720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1608720 is an abundant number, since it is smaller than the sum of its proper divisors (3379056).

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

1608720 is a wasteful number, since it uses less digits than its factorization.

1608720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6719 (or 6713 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1608720 is about 1268.3532630935. The cubic root of 1608720 is about 117.1728033125.

The spelling of 1608720 in words is "one million, six hundred eight thousand, seven hundred twenty".