70821008 has 10 divisors (see below), whose sum is σ = 137215734. Its totient is φ = 35410496.

The previous prime is 70820993. The next prime is 70821013. The reversal of 70821008 is 80012807.

It can be written as a sum of positive squares in only one way, i.e., 44729344 + 26091664 = 6688^2 + 5108^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2213141 + ... + 2213172.

Almost surely, 2^70821008 is an apocalyptic number.

It is an amenable number.

70821008 is a deficient number, since it is larger than the sum of its proper divisors (66394726).

70821008 is a wasteful number, since it uses less digits than its factorization.

70821008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426321 (or 4426315 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 70821008 is about 8415.5218495349. The cubic root of 70821008 is about 413.7335134585.

The spelling of 70821008 in words is "seventy million, eight hundred twenty-one thousand, eight".