70063021 has 4 divisors (see below), whose sum is σ = 80072032. Its totient is φ = 60054012.

The previous prime is 70062989. The next prime is 70063057. The reversal of 70063021 is 12036007.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12036007 = 1151 ⋅10457.

It is a cyclic number.

It is not a de Polignac number, because 70063021 - 2⁵ = 70062989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70063021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70063061) 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 3 ways as a sum of consecutive naturals, for example, 5004495 + ... + 5004508.

It is an arithmetic number, because the mean of its divisors is an integer number (20018008).

Almost surely, 2^70063021 is an apocalyptic number.

It is an amenable number.

70063021 is a deficient number, since it is larger than the sum of its proper divisors (10009011).

70063021 is a wasteful number, since it uses less digits than its factorization.

70063021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009010.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 70063021 is about 8370.3656431485. The cubic root of 70063021 is about 412.2521726550.

Adding to 70063021 its reverse (12036007), we get a palindrome (82099028).

The spelling of 70063021 in words is "seventy million, sixty-three thousand, twenty-one".