78699052 has 12 divisors (see below), whose sum is σ = 145824840. Its totient is φ = 37034816.

The previous prime is 78699043. The next prime is 78699053. The reversal of 78699052 is 25099687.

It is a junction number, because it is equal to n+sod(n) for n = 78698993 and 78699011.

It is not an unprimeable number, because it can be changed into a prime (78699053) 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, 578602 + ... + 578737.

It is an arithmetic number, because the mean of its divisors is an integer number (12152070).

Almost surely, 2^78699052 is an apocalyptic number.

It is an amenable number.

78699052 is a deficient number, since it is larger than the sum of its proper divisors (67125788).

78699052 is a wasteful number, since it uses less digits than its factorization.

78699052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157360 (or 1157358 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 78699052 is about 8871.2486156121. The cubic root of 78699052 is about 428.5384886641.

The spelling of 78699052 in words is "seventy-eight million, six hundred ninety-nine thousand, fifty-two".