78682634 has 8 divisors (see below), whose sum is σ = 120250980. Its totient is φ = 38598976.

The previous prime is 78682633. The next prime is 78682663. The reversal of 78682634 is 43628687.

It can be written as a sum of positive squares in 2 ways, for example, as 73908409 + 4774225 = 8597^2 + 2185^2 .

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

It is not an unprimeable number, because it can be changed into a prime (78682633) 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, 371039 + ... + 371250.

Almost surely, 2^78682634 is an apocalyptic number.

78682634 is a deficient number, since it is larger than the sum of its proper divisors (41568346).

78682634 is a wasteful number, since it uses less digits than its factorization.

78682634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742344.

The product of its digits is 387072, while the sum is 44.

The square root of 78682634 is about 8870.3232184628. The cubic root of 78682634 is about 428.5086863812.

The spelling of 78682634 in words is "seventy-eight million, six hundred eighty-two thousand, six hundred thirty-four".