1351616 has 42 divisors (see below), whose sum is σ = 3127248. Its totient is φ = 577920.

The previous prime is 1351589. The next prime is 1351621. The reversal of 1351616 is 6161531.

It is a happy number.

It is a super-2 number, since 2×1351616² = 3653731622912, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1351591 and 1351600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2921 + ... + 3351.

2^1351616 is an apocalyptic number.

1351616 is a gapful number since it is divisible by the number (16) 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 1351616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1563624).

1351616 is an abundant number, since it is smaller than the sum of its proper divisors (1775632).

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

1351616 is an equidigital number, since it uses as much as digits as its factorization.

1351616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 440 counting only the distinct ones).

The product of its digits is 540, while the sum is 23.

The square root of 1351616 is about 1162.5902115535. The cubic root of 1351616 is about 110.5650265963.

The spelling of 1351616 in words is "one million, three hundred fifty-one thousand, six hundred sixteen".