78674012 has 6 divisors (see below), whose sum is σ = 137679528. Its totient is φ = 39337004.

The previous prime is 78673993. The next prime is 78674017. The reversal of 78674012 is 21047687.

It is a happy number.

It is a super-2 number, since 2×78674012² = 12379200328352288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78674017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9834248 + ... + 9834255.

It is an arithmetic number, because the mean of its divisors is an integer number (22946588).

Almost surely, 2^78674012 is an apocalyptic number.

It is an amenable number.

78674012 is a deficient number, since it is larger than the sum of its proper divisors (59005516).

78674012 is a wasteful number, since it uses less digits than its factorization.

78674012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19668507 (or 19668505 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 78674012 is about 8869.8372025647. The cubic root of 78674012 is about 428.4930338937.

The spelling of 78674012 in words is "seventy-eight million, six hundred seventy-four thousand, twelve".