78725706 has 16 divisors (see below), whose sum is σ = 160120800. Its totient is φ = 25797008.

The previous prime is 78725701. The next prime is 78725741. The reversal of 78725706 is 60752787.

It is not an unprimeable number, because it can be changed into a prime (78725701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110841 + ... + 111548.

It is an arithmetic number, because the mean of its divisors is an integer number (10007550).

Almost surely, 2^78725706 is an apocalyptic number.

78725706 is an abundant number, since it is smaller than the sum of its proper divisors (81395094).

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

78725706 is a wasteful number, since it uses less digits than its factorization.

78725706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222453.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 78725706 is about 8872.7507572342. The cubic root of 78725706 is about 428.5868627140.

The spelling of 78725706 in words is "seventy-eight million, seven hundred twenty-five thousand, seven hundred six".