70207722 has 160 divisors (see below), whose sum is σ = 187708752. Its totient is φ = 19408896.

The previous prime is 70207721. The next prime is 70207723. The reversal of 70207722 is 22770207.

It is an interprime number because it is at equal distance from previous prime (70207721) and next prime (70207723).

It can be written as a sum of positive squares in 8 ways, for example, as 54597321 + 15610401 = 7389^2 + 3951^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

70207722 is a modest number, since divided by 7722 gives 7020 as remainder.

It is not an unprimeable number, because it can be changed into a prime (70207721) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 1324648 + ... + 1324700.

Almost surely, 2^70207722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70207722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93854376).

70207722 is an abundant number, since it is smaller than the sum of its proper divisors (117501030).

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

70207722 is a wasteful number, since it uses less digits than its factorization.

70207722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 70207722 is about 8379.0048335110. The cubic root of 70207722 is about 412.5357853252.

Adding to 70207722 its reverse (22770207), we get a palindrome (92977929).

The spelling of 70207722 in words is "seventy million, two hundred seven thousand, seven hundred twenty-two".