78527764 has 48 divisors (see below), whose sum is σ = 162494080. Its totient is φ = 32503680.

The previous prime is 78527759. The next prime is 78527807. The reversal of 78527764 is 46772587.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237079 + ... + 237409.

Almost surely, 2^78527764 is an apocalyptic number.

78527764 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78527764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81247040).

78527764 is an abundant number, since it is smaller than the sum of its proper divisors (83966316).

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

78527764 is a wasteful number, since it uses less digits than its factorization.

78527764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608 (or 606 counting only the distinct ones).

The product of its digits is 658560, while the sum is 46.

The square root of 78527764 is about 8861.5892479848. The cubic root of 78527764 is about 428.2273590407.

The spelling of 78527764 in words is "seventy-eight million, five hundred twenty-seven thousand, seven hundred sixty-four".