78986045 has 8 divisors (see below), whose sum is σ = 94989024. Its totient is φ = 63051664.

The previous prime is 78986041. The next prime is 78986069. The reversal of 78986045 is 54068987.

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 78986045 - 2² = 78986041 is a prime.

It is a super-3 number, since 3×78986045³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78986041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14579 + ... + 19248.

It is an arithmetic number, because the mean of its divisors is an integer number (11873628).

Almost surely, 2^78986045 is an apocalyptic number.

It is an amenable number.

78986045 is a deficient number, since it is larger than the sum of its proper divisors (16002979).

78986045 is a wasteful number, since it uses less digits than its factorization.

78986045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34299.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 78986045 is about 8887.4093525616. The cubic root of 78986045 is about 429.0587759498.

The spelling of 78986045 in words is "seventy-eight million, nine hundred eighty-six thousand, forty-five".