69966493 has 6 divisors (see below), whose sum is σ = 73843134. Its totient is φ = 66283704.

The previous prime is 69966439. The next prime is 69966497. The reversal of 69966493 is 39466996.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64593369 + 5373124 = 8037^2 + 2318^2 .

It is a de Polignac number, because none of the positive numbers 2^k-69966493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69966493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69966497) 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, 96546 + ... + 97267.

It is an arithmetic number, because the mean of its divisors is an integer number (12307189).

Almost surely, 2^69966493 is an apocalyptic number.

It is an amenable number.

69966493 is a deficient number, since it is larger than the sum of its proper divisors (3876641).

69966493 is a wasteful number, since it uses less digits than its factorization.

69966493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193851 (or 193832 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 52.

The square root of 69966493 is about 8364.5975994067. The cubic root of 69966493 is about 412.0627614352.

The spelling of 69966493 in words is "sixty-nine million, nine hundred sixty-six thousand, four hundred ninety-three".