1299616 has 24 divisors (see below), whose sum is σ = 2710260. Its totient is φ = 611328.

The previous prime is 1299601. The next prime is 1299631. The reversal of 1299616 is 6169921.

It is an interprime number because it is at equal distance from previous prime (1299601) and next prime (1299631).

It can be written as a sum of positive squares in 2 ways, for example, as 1299600 + 16 = 1140^2 + 4^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651 + ... + 1738.

2^1299616 is an apocalyptic number.

1299616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1299616 is an abundant number, since it is smaller than the sum of its proper divisors (1410644).

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

1299616 is a wasteful number, since it uses less digits than its factorization.

1299616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416 (or 2408 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 1299616 is about 1140.0070175223. The cubic root of 1299616 is about 109.1285412256.

It can be divided in two parts, 12996 and 16, that multiplied together give a square (207936 = 456²).

The spelling of 1299616 in words is "one million, two hundred ninety-nine thousand, six hundred sixteen".