70221943 has 8 divisors (see below), whose sum is σ = 76759056. Its totient is φ = 63710400.

The previous prime is 70221923. The next prime is 70221959. The reversal of 70221943 is 34912207.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70221943 is a prime.

It is a super-2 number, since 2×70221943² = 9862242557390498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70221923) 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 7 ways as a sum of consecutive naturals, for example, 396 + ... + 11857.

It is an arithmetic number, because the mean of its divisors is an integer number (9594882).

Almost surely, 2^70221943 is an apocalyptic number.

70221943 is a deficient number, since it is larger than the sum of its proper divisors (6537113).

70221943 is a wasteful number, since it uses less digits than its factorization.

70221943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12785.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 70221943 is about 8379.8533996723. The cubic root of 70221943 is about 412.5636373201.

The spelling of 70221943 in words is "seventy million, two hundred twenty-one thousand, nine hundred forty-three".