70505070 has 32 divisors (see below), whose sum is σ = 170894880. Its totient is φ = 18614400.

The previous prime is 70505047. The next prime is 70505131. The reversal of 70505070 is 7050507.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 70505070.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8605 + ... + 14664.

It is an arithmetic number, because the mean of its divisors is an integer number (5340465).

Almost surely, 2^70505070 is an apocalyptic number.

70505070 is an abundant number, since it is smaller than the sum of its proper divisors (100389810).

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

70505070 is a wasteful number, since it uses less digits than its factorization.

70505070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23380.

The product of its (nonzero) digits is 1225, while the sum is 24.

The square root of 70505070 is about 8396.7297205519. The cubic root of 70505070 is about 413.1173639056.

Adding to 70505070 its reverse (7050507), we get a palindrome (77555577).

The spelling of 70505070 in words is "seventy million, five hundred five thousand, seventy".