70211700 has 216 divisors, whose sum is σ = 251655768. Its totient is φ = 16220160.

The previous prime is 70211641. The next prime is 70211719. The reversal of 70211700 is 711207.

It can be written as a sum of positive squares in 12 ways, for example, as 24324624 + 45887076 = 4932^2 + 6774^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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 71 ways as a sum of consecutive naturals, for example, 198724 + ... + 199076.

It is an arithmetic number, because the mean of its divisors is an integer number (1165073).

Almost surely, 2^70211700 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 70211700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125827884).

70211700 is an abundant number, since it is smaller than the sum of its proper divisors (181444068).

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

70211700 is a wasteful number, since it uses less digits than its factorization.

70211700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 70211700 is about 8379.2422091738. The cubic root of 70211700 is about 412.5435766636.

Adding to 70211700 its reverse (711207), we get a palindrome (70922907).

The spelling of 70211700 in words is "seventy million, two hundred eleven thousand, seven hundred".