1351680 has 112 divisors (see below), whose sum is σ = 4718304. Its totient is φ = 327680.

The previous prime is 1351667. The next prime is 1351697. The reversal of 1351680 is 861531.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1351680.

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, 122875 + ... + 122885.

2^1351680 is an apocalyptic number.

1351680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1351680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2359152).

1351680 is an abundant number, since it is smaller than the sum of its proper divisors (3366624).

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

1351680 is an equidigital number, since it uses as much as digits as its factorization.

1351680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1351680 is about 1162.6177359734. The cubic root of 1351680 is about 110.5667716802.

The spelling of 1351680 in words is "one million, three hundred fifty-one thousand, six hundred eighty".