690068347 has 2 divisors, whose sum is σ = 690068348. Its totient is φ = 690068346.

The previous prime is 690068341. The next prime is 690068413. The reversal of 690068347 is 743860096.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 690068347 - 2¹⁵ = 690035579 is a prime.

It is not a weakly prime, because it can be changed into another prime (690068341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345034173 + 345034174.

It is an arithmetic number, because the mean of its divisors is an integer number (345034174).

Almost surely, 2^690068347 is an apocalyptic number.

690068347 is a deficient number, since it is larger than the sum of its proper divisors (1).

690068347 is an equidigital number, since it uses as much as digits as its factorization.

690068347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 690068347 is about 26269.1520038238. The cubic root of 690068347 is about 883.6847677064.

The spelling of 690068347 in words is "six hundred ninety million, sixty-eight thousand, three hundred forty-seven".