1213716 has 24 divisors (see below), whose sum is σ = 3236800. Its totient is φ = 346752.

The previous prime is 1213673. The next prime is 1213721. The reversal of 1213716 is 6173121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1213692 and 1213701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7141 + ... + 7308.

2^1213716 is an apocalyptic number.

It is an amenable number.

1213716 is an abundant number, since it is smaller than the sum of its proper divisors (2023084).

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

1213716 is a wasteful number, since it uses less digits than its factorization.

1213716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14463 (or 14461 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 1213716 is about 1101.6877960657. The cubic root of 1213716 is about 106.6691969886.

Adding to 1213716 its reverse (6173121), we get a palindrome (7386837).

The spelling of 1213716 in words is "one million, two hundred thirteen thousand, seven hundred sixteen".