70217992 has 16 divisors (see below), whose sum is σ = 141786540. Its totient is φ = 32408256.

The previous prime is 70217981. The next prime is 70218023. The reversal of 70217992 is 29971207.

It can be written as a sum of positive squares in 2 ways, for example, as 66031876 + 4186116 = 8126^2 + 2046^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337483 + ... + 337690.

Almost surely, 2^70217992 is an apocalyptic number.

It is an amenable number.

70217992 is an abundant number, since it is smaller than the sum of its proper divisors (71568548).

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

70217992 is a wasteful number, since it uses less digits than its factorization.

70217992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675192 (or 675188 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 70217992 is about 8379.6176523753. The cubic root of 70217992 is about 412.5558996176. Note that the first 3 decimals are identical.

The spelling of 70217992 in words is "seventy million, two hundred seventeen thousand, nine hundred ninety-two".