70212816 has 30 divisors (see below), whose sum is σ = 196498770. Its totient is φ = 23404224.

The previous prime is 70212811. The next prime is 70212827. The reversal of 70212816 is 61821207.

It can be written as a sum of positive squares in only one way, i.e., 61779600 + 8433216 = 7860^2 + 2904^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70212816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70212811) 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 5 ways as a sum of consecutive naturals, for example, 243651 + ... + 243938.

It is an arithmetic number, because the mean of its divisors is an integer number (6549959).

Almost surely, 2^70212816 is an apocalyptic number.

It is an amenable number.

70212816 is an abundant number, since it is smaller than the sum of its proper divisors (126285954).

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

70212816 is a wasteful number, since it uses less digits than its factorization.

70212816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487603 (or 487594 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 70212816 is about 8379.3088020433. The cubic root of 70212816 is about 412.5457624161.

The spelling of 70212816 in words is "seventy million, two hundred twelve thousand, eight hundred sixteen".