78459064 has 32 divisors (see below), whose sum is σ = 149454000. Its totient is φ = 38610432.

The previous prime is 78459061. The next prime is 78459067. The reversal of 78459064 is 46095487.

It is an interprime number because it is at equal distance from previous prime (78459061) and next prime (78459067).

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78459064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78459061) 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, 206827 + ... + 207205.

Almost surely, 2^78459064 is an apocalyptic number.

It is an amenable number.

78459064 is a deficient number, since it is larger than the sum of its proper divisors (70994936).

78459064 is a wasteful number, since it uses less digits than its factorization.

78459064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 723 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 78459064 is about 8857.7121199551. The cubic root of 78459064 is about 428.1024443975.

The spelling of 78459064 in words is "seventy-eight million, four hundred fifty-nine thousand, sixty-four".