78469145 has 8 divisors (see below), whose sum is σ = 99119040. Its totient is φ = 59471280.

The previous prime is 78469141. The next prime is 78469159. The reversal of 78469145 is 54196487.

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

It is not a de Polignac number, because 78469145 - 2² = 78469141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78469096 and 78469105.

It is not an unprimeable number, because it can be changed into a prime (78469141) 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, 412901 + ... + 413090.

It is an arithmetic number, because the mean of its divisors is an integer number (12389880).

Almost surely, 2^78469145 is an apocalyptic number.

It is an amenable number.

78469145 is a deficient number, since it is larger than the sum of its proper divisors (20649895).

78469145 is a wasteful number, since it uses less digits than its factorization.

78469145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826015.

The product of its digits is 241920, while the sum is 44.

The square root of 78469145 is about 8858.2811538131. The cubic root of 78469145 is about 428.1207788669.

The spelling of 78469145 in words is "seventy-eight million, four hundred sixty-nine thousand, one hundred forty-five".