699222997 has 4 divisors (see below), whose sum is σ = 762788736. Its totient is φ = 635657260.

The previous prime is 699222961. The next prime is 699223001. The reversal of 699222997 is 799222996.

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 a de Polignac number, because none of the positive numbers 2^k-699222997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699222947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31782853 + ... + 31782874.

It is an arithmetic number, because the mean of its divisors is an integer number (190697184).

Almost surely, 2^699222997 is an apocalyptic number.

It is an amenable number.

699222997 is a deficient number, since it is larger than the sum of its proper divisors (63565739).

699222997 is a wasteful number, since it uses less digits than its factorization.

699222997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63565738.

The product of its digits is 2204496, while the sum is 55.

The square root of 699222997 is about 26442.8250570925. The cubic root of 699222997 is about 887.5753543635.

Subtracting 699222997 from its reverse (799222996), we obtain a palindrome (99999999).

The spelling of 699222997 in words is "six hundred ninety-nine million, two hundred twenty-two thousand, nine hundred ninety-seven".