70707070 has 64 divisors (see below), whose sum is σ = 149993856. Its totient is φ = 23500800.

The previous prime is 70707061. The next prime is 70707071. The reversal of 70707070 is 7070707.

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

70707070 is an undulating number in base 10.

70707070 is a modest number, since divided by 707070 gives 70 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70707071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 516042 + ... + 516178.

It is an arithmetic number, because the mean of its divisors is an integer number (2343654).

Almost surely, 2^70707070 is an apocalyptic number.

70707070 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

70707070 is an abundant number, since it is smaller than the sum of its proper divisors (79286786).

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

70707070 is a wasteful number, since it uses less digits than its factorization.

70707070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

The product of its (nonzero) digits is 2401, while the sum is 28.

The square root of 70707070 is about 8408.7496097815. The cubic root of 70707070 is about 413.5115206117.

Adding to 70707070 its reverse (7070707), we get a palindrome (77777777).

The spelling of 70707070 in words is "seventy million, seven hundred seven thousand, seventy".