245686969 has 4 divisors (see below), whose sum is σ = 268022160. Its totient is φ = 223351780.

The previous prime is 245686957. The next prime is 245686979. The reversal of 245686969 is 969686542.

It is a happy number.

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 not a de Polignac number, because 245686969 - 2⁵ = 245686937 is a prime.

It is a super-2 number, since 2×245686969² = 120724173472813922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245686949) 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, 11167579 + ... + 11167600.

It is an arithmetic number, because the mean of its divisors is an integer number (67005540).

Almost surely, 2^245686969 is an apocalyptic number.

It is an amenable number.

245686969 is a deficient number, since it is larger than the sum of its proper divisors (22335191).

245686969 is a wasteful number, since it uses less digits than its factorization.

245686969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22335190.

The product of its digits is 5598720, while the sum is 55.

The square root of 245686969 is about 15674.4049009843. The cubic root of 245686969 is about 626.3167707155.

The spelling of 245686969 in words is "two hundred forty-five million, six hundred eighty-six thousand, nine hundred sixty-nine".