78669322 has 8 divisors (see below), whose sum is σ = 118424772. Its totient is φ = 39194400.

The previous prime is 78669313. The next prime is 78669337. The reversal of 78669322 is 22396687.

It can be written as a sum of positive squares in 2 ways, for example, as 72573361 + 6095961 = 8519^2 + 2469^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69429 + ... + 70552.

Almost surely, 2^78669322 is an apocalyptic number.

78669322 is a deficient number, since it is larger than the sum of its proper divisors (39755450).

78669322 is a wasteful number, since it uses less digits than its factorization.

78669322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140264.

The product of its digits is 217728, while the sum is 43.

The square root of 78669322 is about 8869.5728194767. The cubic root of 78669322 is about 428.4845191283.

The spelling of 78669322 in words is "seventy-eight million, six hundred sixty-nine thousand, three hundred twenty-two".