21346699 has 6 divisors (see below), whose sum is σ = 23463860. Its totient is φ = 19405980.

The previous prime is 21346681. The next prime is 21346711. The reversal of 21346699 is 99664312.

It is not a de Polignac number, because 21346699 - 2⁵ = 21346667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21344699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88089 + ... + 88330.

Almost surely, 2^21346699 is an apocalyptic number.

21346699 is a deficient number, since it is larger than the sum of its proper divisors (2117161).

21346699 is a wasteful number, since it uses less digits than its factorization.

21346699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176441 (or 176430 counting only the distinct ones).

The product of its digits is 69984, while the sum is 40.

The square root of 21346699 is about 4620.2488028244. The cubic root of 21346699 is about 277.4024178714.

The spelling of 21346699 in words is "twenty-one million, three hundred forty-six thousand, six hundred ninety-nine".