69668249 has 6 divisors (see below), whose sum is σ = 81042714. Its totient is φ = 59715600.

The previous prime is 69668243. The next prime is 69668257. The reversal of 69668249 is 94286696.

It can be written as a sum of positive squares in only one way, i.e., 46676224 + 22992025 = 6832^2 + 4795^2 .

It is not a de Polignac number, because 69668249 - 2⁴ = 69668233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69668197 and 69668206.

It is not an unprimeable number, because it can be changed into a prime (69668243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 710852 + ... + 710949.

It is an arithmetic number, because the mean of its divisors is an integer number (13507119).

Almost surely, 2^69668249 is an apocalyptic number.

It is an amenable number.

69668249 is a deficient number, since it is larger than the sum of its proper divisors (11374465).

69668249 is a wasteful number, since it uses less digits than its factorization.

69668249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421815 (or 1421808 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 69668249 is about 8346.7508049540. The cubic root of 69668249 is about 411.4764318163.

The spelling of 69668249 in words is "sixty-nine million, six hundred sixty-eight thousand, two hundred forty-nine".