1228605698 has 8 divisors (see below), whose sum is σ = 1854647292. Its totient is φ = 610389936.

The previous prime is 1228605661. The next prime is 1228605739. The reversal of 1228605698 is 8965068221.

It can be written as a sum of positive squares in 2 ways, for example, as 1202216929 + 26388769 = 34673^2 + 5137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1228605698² = 3018943922316134408, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1956065 + ... + 1956692.

Almost surely, 2^1228605698 is an apocalyptic number.

1228605698 is a deficient number, since it is larger than the sum of its proper divisors (626041594).

1228605698 is a wasteful number, since it uses less digits than its factorization.

1228605698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912916.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 1228605698 is about 35051.4721231505. The cubic root of 1228605698 is about 1071.0362622246.

The spelling of 1228605698 in words is "one billion, two hundred twenty-eight million, six hundred five thousand, six hundred ninety-eight".