78466346 has 12 divisors (see below), whose sum is σ = 136915938. Its totient is φ = 33628392.

The previous prime is 78466337. The next prime is 78466351. The reversal of 78466346 is 64366487.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 73290721 + 5175625 = 8561^2 + 2275^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78466297 and 78466306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 400241 + ... + 400436.

Almost surely, 2^78466346 is an apocalyptic number.

78466346 is a deficient number, since it is larger than the sum of its proper divisors (58449592).

78466346 is a wasteful number, since it uses less digits than its factorization.

78466346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800693 (or 800686 counting only the distinct ones).

The product of its digits is 580608, while the sum is 44.

The square root of 78466346 is about 8858.1231646439. The cubic root of 78466346 is about 428.1156884401.

The spelling of 78466346 in words is "seventy-eight million, four hundred sixty-six thousand, three hundred forty-six".