1321064699 has 12 divisors (see below), whose sum is σ = 1395795024. Its totient is φ = 1250152272.

The previous prime is 1321064651. The next prime is 1321064809. The reversal of 1321064699 is 9964601231.

It is a de Polignac number, because none of the positive numbers 2^k-1321064699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321064999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 492149 + ... + 494825.

It is an arithmetic number, because the mean of its divisors is an integer number (116316252).

Almost surely, 2^1321064699 is an apocalyptic number.

1321064699 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1321064699 is a deficient number, since it is larger than the sum of its proper divisors (74730325).

1321064699 is a wasteful number, since it uses less digits than its factorization.

1321064699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082 (or 4063 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 1321064699 is about 36346.4537334800. The cubic root of 1321064699 is about 1097.2561639553.

The spelling of 1321064699 in words is "one billion, three hundred twenty-one million, sixty-four thousand, six hundred ninety-nine".