78648582 has 8 divisors (see below), whose sum is σ = 157297176. Its totient is φ = 26216192.

The previous prime is 78648571. The next prime is 78648587. The reversal of 78648582 is 28584687.

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

78648582 is an admirable number.

It is a super-2 number, since 2×78648582² = 12371198901221448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78648587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6554043 + ... + 6554054.

It is an arithmetic number, because the mean of its divisors is an integer number (19662147).

Almost surely, 2^78648582 is an apocalyptic number.

78648582 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78648582 is a wasteful number, since it uses less digits than its factorization.

78648582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13108102.

The product of its digits is 860160, while the sum is 48.

The square root of 78648582 is about 8868.4035767437. The cubic root of 78648582 is about 428.4468612892.

The spelling of 78648582 in words is "seventy-eight million, six hundred forty-eight thousand, five hundred eighty-two".