69665405764 has 6 divisors (see below), whose sum is σ = 121914460094. Its totient is φ = 34832702880.

The previous prime is 69665405729. The next prime is 69665405851. The reversal of 69665405764 is 46750456696.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46415255364 + 23250150400 = 215442^2 + 152480^2 .

It is a junction number, because it is equal to n+sod(n) for n = 69665405699 and 69665405708.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8708175717 + ... + 8708175724.

Almost surely, 2^69665405764 is an apocalyptic number.

It is an amenable number.

69665405764 is a deficient number, since it is larger than the sum of its proper divisors (52249054330).

69665405764 is a wasteful number, since it uses less digits than its factorization.

69665405764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17416351445 (or 17416351443 counting only the distinct ones).

The product of its (nonzero) digits is 32659200, while the sum is 58.

The spelling of 69665405764 in words is "sixty-nine billion, six hundred sixty-five million, four hundred five thousand, seven hundred sixty-four".