70320650 has 24 divisors (see below), whose sum is σ = 135309420. Its totient is φ = 27157760.

The previous prime is 70320647. The next prime is 70320659. The reversal of 70320650 is 5602307.

It can be written as a sum of positive squares in 6 ways, for example, as 14235529 + 56085121 = 3773^2 + 7489^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70320659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22799 + ... + 25698.

Almost surely, 2^70320650 is an apocalyptic number.

70320650 is a deficient number, since it is larger than the sum of its proper divisors (64988770).

70320650 is a wasteful number, since it uses less digits than its factorization.

70320650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48538 (or 48533 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 70320650 is about 8385.7408736497. The cubic root of 70320650 is about 412.7568525814.

Adding to 70320650 its reverse (5602307), we get a palindrome (75922957).

The spelling of 70320650 in words is "seventy million, three hundred twenty thousand, six hundred fifty".