78465147 has 8 divisors (see below), whose sum is σ = 104810256. Its totient is φ = 52215072.

The previous prime is 78465131. The next prime is 78465151. The reversal of 78465147 is 74156487.

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

It is not a de Polignac number, because 78465147 - 2⁴ = 78465131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78465099 and 78465108.

It is not an unprimeable number, because it can be changed into a prime (78465157) 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, 21808 + ... + 25149.

It is an arithmetic number, because the mean of its divisors is an integer number (13101282).

Almost surely, 2^78465147 is an apocalyptic number.

78465147 is a deficient number, since it is larger than the sum of its proper divisors (26345109).

78465147 is a wasteful number, since it uses less digits than its factorization.

78465147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47517.

The product of its digits is 188160, while the sum is 42.

The square root of 78465147 is about 8858.0554863920. The cubic root of 78465147 is about 428.1135078308.

The spelling of 78465147 in words is "seventy-eight million, four hundred sixty-five thousand, one hundred forty-seven".