70704720 has 120 divisors (see below), whose sum is σ = 238975776. Its totient is φ = 18733824.

The previous prime is 70704701. The next prime is 70704731. The reversal of 70704720 is 2740707.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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 23 ways as a sum of consecutive naturals, for example, 203587 + ... + 203933.

Almost surely, 2^70704720 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 70704720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119487888).

70704720 is an abundant number, since it is smaller than the sum of its proper divisors (168271056).

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

70704720 is a wasteful number, since it uses less digits than its factorization.

70704720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 70704720 is about 8408.6098732192. The cubic root of 70704720 is about 413.5069394440.

The spelling of 70704720 in words is "seventy million, seven hundred four thousand, seven hundred twenty".