1299357696 has 336 divisors, whose sum is σ = 4392741024. Its totient is φ = 338558976.

The previous prime is 1299357667. The next prime is 1299357713. The reversal of 1299357696 is 6967539921.

It is a tau number, because it is divible by the number of its divisors (336).

Its product of digits (5511240) is a multiple of the sum of its prime divisors (108).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15654871 + ... + 15654953.

It is an arithmetic number, because the mean of its divisors is an integer number (13073634).

Almost surely, 2^1299357696 is an apocalyptic number.

1299357696 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 1299357696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2196370512).

1299357696 is an abundant number, since it is smaller than the sum of its proper divisors (3093383328).

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

1299357696 is an equidigital number, since it uses as much as digits as its factorization.

1299357696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 108 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 57.

The square root of 1299357696 is about 36046.6045002855. The cubic root of 1299357696 is about 1091.2131083183.

The spelling of 1299357696 in words is "one billion, two hundred ninety-nine million, three hundred fifty-seven thousand, six hundred ninety-six".