78226966 has 8 divisors (see below), whose sum is σ = 117450144. Its totient is φ = 39076920.

The previous prime is 78226961. The next prime is 78226987. The reversal of 78226966 is 66962287.

It is a happy number.

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

It is a super-2 number, since 2×78226966² = 12238916419130312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78226961) 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, 15525 + ... + 19936.

It is an arithmetic number, because the mean of its divisors is an integer number (14681268).

Almost surely, 2^78226966 is an apocalyptic number.

78226966 is a deficient number, since it is larger than the sum of its proper divisors (39223178).

78226966 is a wasteful number, since it uses less digits than its factorization.

78226966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36566.

The product of its digits is 435456, while the sum is 46.

The square root of 78226966 is about 8844.6009519933. The cubic root of 78226966 is about 427.6798891827.

The spelling of 78226966 in words is "seventy-eight million, two hundred twenty-six thousand, nine hundred sixty-six".