223960691 has 4 divisors (see below), whose sum is σ = 223991832. Its totient is φ = 223929552.

The previous prime is 223960673. The next prime is 223960717. The reversal of 223960691 is 196069322.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223960691 is a prime.

It is a super-2 number, since 2×223960691² = 100316782226394962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223960651) 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, 1340 + ... + 21206.

It is an arithmetic number, because the mean of its divisors is an integer number (55997958).

Almost surely, 2^223960691 is an apocalyptic number.

223960691 is a deficient number, since it is larger than the sum of its proper divisors (31141).

223960691 is a wasteful number, since it uses less digits than its factorization.

223960691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31140.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 223960691 is about 14965.3162679577. The cubic root of 223960691 is about 607.2822669171.

The spelling of 223960691 in words is "two hundred twenty-three million, nine hundred sixty thousand, six hundred ninety-one".