78464013 has 8 divisors (see below), whose sum is σ = 107446368. Its totient is φ = 50895504.

The previous prime is 78463999. The next prime is 78464039. The reversal of 78464013 is 31046487.

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

It is not a de Polignac number, because 78464013 - 2⁹ = 78463501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78464213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353331 + ... + 353552.

It is an arithmetic number, because the mean of its divisors is an integer number (13430796).

Almost surely, 2^78464013 is an apocalyptic number.

It is an amenable number.

78464013 is a deficient number, since it is larger than the sum of its proper divisors (28982355).

78464013 is a wasteful number, since it uses less digits than its factorization.

78464013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706923.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 78464013 is about 8857.9914766272. The cubic root of 78464013 is about 428.1114454160. Note that the first 3 decimals are identical.

The spelling of 78464013 in words is "seventy-eight million, four hundred sixty-four thousand, thirteen".