70221700 has 36 divisors (see below), whose sum is σ = 153271440. Its totient is φ = 27924640.

The previous prime is 70221659. The next prime is 70221707. The reversal of 70221700 is 712207.

It is not an unprimeable number, because it can be changed into a prime (70221707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15939 + ... + 19861.

It is an arithmetic number, because the mean of its divisors is an integer number (4257540).

Almost surely, 2^70221700 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 70221700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76635720).

70221700 is an abundant number, since it is smaller than the sum of its proper divisors (83049740).

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

70221700 is a wasteful number, since it uses less digits than its factorization.

70221700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116 (or 4109 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 70221700 is about 8379.8389005995. The cubic root of 70221700 is about 412.5631614333.

Adding to 70221700 its reverse (712207), we get a palindrome (70933907).

The spelling of 70221700 in words is "seventy million, two hundred twenty-one thousand, seven hundred".