78654045 has 16 divisors (see below), whose sum is σ = 129248640. Its totient is φ = 40814784.

The previous prime is 78653999. The next prime is 78654049. The reversal of 78654045 is 54045687.

It is not a de Polignac number, because 78654045 - 2¹⁰ = 78653021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78653994 and 78654012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78654049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70305 + ... + 71414.

It is an arithmetic number, because the mean of its divisors is an integer number (8078040).

Almost surely, 2^78654045 is an apocalyptic number.

It is an amenable number.

78654045 is a deficient number, since it is larger than the sum of its proper divisors (50594595).

78654045 is a wasteful number, since it uses less digits than its factorization.

78654045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141764.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 78654045 is about 8868.7115749696. The cubic root of 78654045 is about 428.4567811587.

The spelling of 78654045 in words is "seventy-eight million, six hundred fifty-four thousand, forty-five".