70306560 has 216 divisors, whose sum is σ = 258279840. Its totient is φ = 17596416.

The previous prime is 70306559. The next prime is 70306609. The reversal of 70306560 is 6560307.

70306560 is a `hidden beast` number, since 7 + 0 + 3 + 0 + 656 + 0 = 666.

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, 195661 + ... + 196019.

It is an arithmetic number, because the mean of its divisors is an integer number (1195740).

Almost surely, 2^70306560 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 70306560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129139920).

70306560 is an abundant number, since it is smaller than the sum of its proper divisors (187973280).

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

70306560 is a wasteful number, since it uses less digits than its factorization.

70306560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 70306560 is about 8384.9007149757. The cubic root of 70306560 is about 412.7292830006.

Adding to 70306560 its reverse (6560307), we get a palindrome (76866867).

The spelling of 70306560 in words is "seventy million, three hundred six thousand, five hundred sixty".