70662212821 has 8 divisors (see below), whose sum is σ = 71363406744. Its totient is φ = 69962350080.

The previous prime is 70662212779. The next prime is 70662212843. The reversal of 70662212821 is 12821226607.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5130225 + 70657082596 = 2265^2 + 265814^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70662212821 - 2⁷ = 70662212693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70662215821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225936 + ... + 438601.

It is an arithmetic number, because the mean of its divisors is an integer number (8920425843).

Almost surely, 2^70662212821 is an apocalyptic number.

It is an amenable number.

70662212821 is a deficient number, since it is larger than the sum of its proper divisors (701193923).

70662212821 is a wasteful number, since it uses less digits than its factorization.

70662212821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665591.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 70662212821 in words is "seventy billion, six hundred sixty-two million, two hundred twelve thousand, eight hundred twenty-one".