70643201 has 4 divisors (see below), whose sum is σ = 70828032. Its totient is φ = 70458372.

The previous prime is 70643149. The next prime is 70643207. The reversal of 70643201 is 10234607.

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.

It is a cyclic number.

It is not a de Polignac number, because 70643201 - 2¹⁴ = 70626817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70643207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91841 + ... + 92606.

It is an arithmetic number, because the mean of its divisors is an integer number (17707008).

Almost surely, 2^70643201 is an apocalyptic number.

It is an amenable number.

70643201 is a deficient number, since it is larger than the sum of its proper divisors (184831).

70643201 is a wasteful number, since it uses less digits than its factorization.

70643201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184830.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 70643201 is about 8404.9509814157. The cubic root of 70643201 is about 413.3869761429.

Adding to 70643201 its reverse (10234607), we get a palindrome (80877808).

The spelling of 70643201 in words is "seventy million, six hundred forty-three thousand, two hundred one".