78464011 has 4 divisors (see below), whose sum is σ = 78529392. Its totient is φ = 78398632.

The previous prime is 78463999. The next prime is 78464039. The reversal of 78464011 is 11046487.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78464011 - 2²¹ = 76366859 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78464051) 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 3 ways as a sum of consecutive naturals, for example, 30856 + ... + 33301.

It is an arithmetic number, because the mean of its divisors is an integer number (19632348).

Almost surely, 2^78464011 is an apocalyptic number.

78464011 is a deficient number, since it is larger than the sum of its proper divisors (65381).

78464011 is a wasteful number, since it uses less digits than its factorization.

78464011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65380.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 78464011 is about 8857.9913637348. The cubic root of 78464011 is about 428.1114417785. Note that the first 3 decimals are identical.

The spelling of 78464011 in words is "seventy-eight million, four hundred sixty-four thousand, eleven".