226198662691 has 4 divisors (see below), whose sum is σ = 227586384712. Its totient is φ = 224810940672.

The previous prime is 226198662593. The next prime is 226198662721. The reversal of 226198662691 is 196266891622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 226198662691 - 2⁷ = 226198662563 is a prime.

It is a super-2 number, since 2×226198662691² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226198662191) 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, 693860766 + ... + 693861091.

It is an arithmetic number, because the mean of its divisors is an integer number (56896596178).

Almost surely, 2^226198662691 is an apocalyptic number.

226198662691 is a deficient number, since it is larger than the sum of its proper divisors (1387722021).

226198662691 is a wasteful number, since it uses less digits than its factorization.

226198662691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387722020.

The product of its digits is 6718464, while the sum is 58.

The spelling of 226198662691 in words is "two hundred twenty-six billion, one hundred ninety-eight million, six hundred sixty-two thousand, six hundred ninety-one".