70807680 has 192 divisors, whose sum is σ = 257774400. Its totient is φ = 17860608.

The previous prime is 70807679. The next prime is 70807691. The reversal of 70807680 is 8670807.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109117 + ... + 109763.

It is an arithmetic number, because the mean of its divisors is an integer number (1342575).

Almost surely, 2^70807680 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 70807680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128887200).

70807680 is an abundant number, since it is smaller than the sum of its proper divisors (186966720).

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

70807680 is a wasteful number, since it uses less digits than its factorization.

70807680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 70807680 is about 8414.7299421907. The cubic root of 70807680 is about 413.7075579482.

The spelling of 70807680 in words is "seventy million, eight hundred seven thousand, six hundred eighty".