78045745 has 8 divisors (see below), whose sum is σ = 93738816. Its totient is φ = 62380656.

The previous prime is 78045743. The next prime is 78045769. The reversal of 78045745 is 54754087.

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 78045745 - 2¹ = 78045743 is a prime.

It is a super-2 number, since 2×78045745² = 12182276625210050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78045698 and 78045707.

It is not an unprimeable number, because it can be changed into a prime (78045743) 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, 267 + ... + 12496.

It is an arithmetic number, because the mean of its divisors is an integer number (11717352).

Almost surely, 2^78045745 is an apocalyptic number.

It is an amenable number.

78045745 is a deficient number, since it is larger than the sum of its proper divisors (15693071).

78045745 is a wasteful number, since it uses less digits than its factorization.

78045745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13991.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 78045745 is about 8834.3502873726. The cubic root of 78045745 is about 427.3493786717.

The spelling of 78045745 in words is "seventy-eight million, forty-five thousand, seven hundred forty-five".