78554468 has 6 divisors (see below), whose sum is σ = 137470326. Its totient is φ = 39277232.

The previous prime is 78554461. The next prime is 78554521. The reversal of 78554468 is 86445587.

It can be written as a sum of positive squares in only one way, i.e., 56670784 + 21883684 = 7528^2 + 4678^2 .

It is not an unprimeable number, because it can be changed into a prime (78554461) 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 as a sum of consecutive naturals, namely, 9819305 + ... + 9819312.

It is an arithmetic number, because the mean of its divisors is an integer number (22911721).

Almost surely, 2^78554468 is an apocalyptic number.

It is an amenable number.

78554468 is a deficient number, since it is larger than the sum of its proper divisors (58915858).

78554468 is a wasteful number, since it uses less digits than its factorization.

78554468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19638621 (or 19638619 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 47.

The square root of 78554468 is about 8863.0958473888. The cubic root of 78554468 is about 428.2758942629.

The spelling of 78554468 in words is "seventy-eight million, five hundred fifty-four thousand, four hundred sixty-eight".