78628966 has 8 divisors (see below), whose sum is σ = 127016064. Its totient is φ = 36290280.

The previous prime is 78628931. The next prime is 78628967. The reversal of 78628966 is 66982687.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78628967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512070 + ... + 1512121.

It is an arithmetic number, because the mean of its divisors is an integer number (15877008).

Almost surely, 2^78628966 is an apocalyptic number.

78628966 is a deficient number, since it is larger than the sum of its proper divisors (48387098).

78628966 is a wasteful number, since it uses less digits than its factorization.

78628966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024206.

The product of its digits is 1741824, while the sum is 52.

The square root of 78628966 is about 8867.2975590086. The cubic root of 78628966 is about 428.4112382166.

The spelling of 78628966 in words is "seventy-eight million, six hundred twenty-eight thousand, nine hundred sixty-six".