78664350 has 24 divisors (see below), whose sum is σ = 195087960. Its totient is φ = 20977120.

The previous prime is 78664343. The next prime is 78664357. The reversal of 78664350 is 5346687.

It is an interprime number because it is at equal distance from previous prime (78664343) and next prime (78664357).

It is a junction number, because it is equal to n+sod(n) for n = 78664299 and 78664308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78664357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262065 + ... + 262364.

It is an arithmetic number, because the mean of its divisors is an integer number (8128665).

Almost surely, 2^78664350 is an apocalyptic number.

78664350 is an abundant number, since it is smaller than the sum of its proper divisors (116423610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78664350 is a wasteful number, since it uses less digits than its factorization.

78664350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524444 (or 524439 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 78664350 is about 8869.2925309745. The cubic root of 78664350 is about 428.4754920181.

The spelling of 78664350 in words is "seventy-eight million, six hundred sixty-four thousand, three hundred fifty".