69998321 has 4 divisors (see below), whose sum is σ = 70105200. Its totient is φ = 69891444.

The previous prime is 69998309. The next prime is 69998323. The reversal of 69998321 is 12389996.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69998321 - 2²² = 65804017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69998323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52451 + ... + 53768.

It is an arithmetic number, because the mean of its divisors is an integer number (17526300).

Almost surely, 2^69998321 is an apocalyptic number.

It is an amenable number.

69998321 is a deficient number, since it is larger than the sum of its proper divisors (106879).

69998321 is a wasteful number, since it uses less digits than its factorization.

69998321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106878.

The product of its digits is 209952, while the sum is 47.

The square root of 69998321 is about 8366.4999252973. The cubic root of 69998321 is about 412.1252348888.

The spelling of 69998321 in words is "sixty-nine million, nine hundred ninety-eight thousand, three hundred twenty-one".