70613856 has 96 divisors (see below), whose sum is σ = 208706400. Its totient is φ = 23514624.

The previous prime is 70613843. The next prime is 70613863. The reversal of 70613856 is 65831607.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 70613856.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69480 + ... + 70488.

It is an arithmetic number, because the mean of its divisors is an integer number (2174025).

Almost surely, 2^70613856 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 70613856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104353200).

70613856 is an abundant number, since it is smaller than the sum of its proper divisors (138092544).

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

70613856 is an equidigital number, since it uses as much as digits as its factorization.

70613856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 70613856 is about 8403.2051028164. The cubic root of 70613856 is about 413.3297282608.

The spelling of 70613856 in words is "seventy million, six hundred thirteen thousand, eight hundred fifty-six".