69968644 has 6 divisors (see below), whose sum is σ = 122445134. Its totient is φ = 34984320.

The previous prime is 69968629. The next prime is 69968653. The reversal of 69968644 is 44686996.

It can be written as a sum of positive squares in only one way, i.e., 42406144 + 27562500 = 6512^2 + 5250^2 .

It is a super-2 number, since 2×69968644² = 9791222286397472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 69968591 and 69968600.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8746077 + ... + 8746084.

Almost surely, 2^69968644 is an apocalyptic number.

It is an amenable number.

69968644 is a deficient number, since it is larger than the sum of its proper divisors (52476490).

69968644 is a wasteful number, since it uses less digits than its factorization.

69968644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17492165 (or 17492163 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 52.

The square root of 69968644 is about 8364.7261760323. The cubic root of 69968644 is about 412.0669841132.

The spelling of 69968644 in words is "sixty-nine million, nine hundred sixty-eight thousand, six hundred forty-four".