70647678 has 12 divisors (see below), whose sum is σ = 153070008. Its totient is φ = 23549220.

The previous prime is 70647677. The next prime is 70647701. The reversal of 70647678 is 87674607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70647677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1962418 + ... + 1962453.

It is an arithmetic number, because the mean of its divisors is an integer number (12755834).

Almost surely, 2^70647678 is an apocalyptic number.

70647678 is an abundant number, since it is smaller than the sum of its proper divisors (82422330).

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

70647678 is a wasteful number, since it uses less digits than its factorization.

70647678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3924879 (or 3924876 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 70647678 is about 8405.2173083151. The cubic root of 70647678 is about 413.3957087332.

It can be divided in two parts, 706 and 47678, that added together give a palindrome (48384).

The spelling of 70647678 in words is "seventy million, six hundred forty-seven thousand, six hundred seventy-eight".