78274061 has 8 divisors (see below), whose sum is σ = 81454560. Its totient is φ = 75155472.

The previous prime is 78274033. The next prime is 78274081. The reversal of 78274061 is 16047287.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 78274061 - 2¹⁰ = 78273037 is a prime.

It is a super-2 number, since 2×78274061² = 12253657250863442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78274081) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 12890 + ... + 17963.

It is an arithmetic number, because the mean of its divisors is an integer number (10181820).

Almost surely, 2^78274061 is an apocalyptic number.

It is an amenable number.

78274061 is a deficient number, since it is larger than the sum of its proper divisors (3180499).

78274061 is a wasteful number, since it uses less digits than its factorization.

78274061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30955.

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

The square root of 78274061 is about 8847.2629100756. The cubic root of 78274061 is about 427.7656973757.

The spelling of 78274061 in words is "seventy-eight million, two hundred seventy-four thousand, sixty-one".