78606632 has 48 divisors (see below), whose sum is σ = 162756540. Its totient is φ = 35563008.

The previous prime is 78606581. The next prime is 78606643. The reversal of 78606632 is 23660687.

It can be written as a sum of positive squares in 6 ways, for example, as 11792356 + 66814276 = 3434^2 + 8174^2 .

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 11 ways as a sum of consecutive naturals, for example, 71108 + ... + 72204.

Almost surely, 2^78606632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78606632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81378270).

78606632 is an abundant number, since it is smaller than the sum of its proper divisors (84149908).

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

78606632 is a wasteful number, since it uses less digits than its factorization.

78606632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 78606632 is about 8866.0381230852. The cubic root of 78606632 is about 428.3706719844.

The spelling of 78606632 in words is "seventy-eight million, six hundred six thousand, six hundred thirty-two".