68824969 has 4 divisors (see below), whose sum is σ = 68887060. Its totient is φ = 68762880.

The previous prime is 68824961. The next prime is 68824979. The reversal of 68824969 is 96942886.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2190400 + 66634569 = 1480^2 + 8163^2 .

It is a cyclic number.

It is not a de Polignac number, because 68824969 - 2³ = 68824961 is a prime.

It is a super-2 number, since 2×68824969² = 9473752715701922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68824961) 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, 29352 + ... + 31609.

It is an arithmetic number, because the mean of its divisors is an integer number (17221765).

Almost surely, 2^68824969 is an apocalyptic number.

It is an amenable number.

68824969 is a deficient number, since it is larger than the sum of its proper divisors (62091).

68824969 is a wasteful number, since it uses less digits than its factorization.

68824969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62090.

The product of its digits is 1492992, while the sum is 52.

The square root of 68824969 is about 8296.0815449223. The cubic root of 68824969 is about 409.8094871384.

The spelling of 68824969 in words is "sixty-eight million, eight hundred twenty-four thousand, nine hundred sixty-nine".