70855872 has 56 divisors (see below), whose sum is σ = 192066672. Its totient is φ = 23040000.

The previous prime is 70855871. The next prime is 70855877. The reversal of 70855872 is 27855807.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (70855871) 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, 3372 + ... + 12372.

It is an arithmetic number, because the mean of its divisors is an integer number (3429762).

Almost surely, 2^70855872 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 70855872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96033336).

70855872 is an abundant number, since it is smaller than the sum of its proper divisors (121210800).

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

70855872 is a wasteful number, since it uses less digits than its factorization.

70855872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9057 (or 9047 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 70855872 is about 8417.5930051292. The cubic root of 70855872 is about 413.8013936883.

The spelling of 70855872 in words is "seventy million, eight hundred fifty-five thousand, eight hundred seventy-two".