70032811 has 4 divisors (see below), whose sum is σ = 70256872. Its totient is φ = 69808752.

The previous prime is 70032791. The next prime is 70032817. The reversal of 70032811 is 11823007.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70032811 - 2¹⁵ = 70000043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70032817) 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, 111561 + ... + 112186.

It is an arithmetic number, because the mean of its divisors is an integer number (17564218).

Almost surely, 2^70032811 is an apocalyptic number.

70032811 is a deficient number, since it is larger than the sum of its proper divisors (224061).

70032811 is a wasteful number, since it uses less digits than its factorization.

70032811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224060.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 70032811 is about 8368.5608679151. The cubic root of 70032811 is about 412.1929120617.

Adding to 70032811 its reverse (11823007), we get a palindrome (81855818).

The spelling of 70032811 in words is "seventy million, thirty-two thousand, eight hundred eleven".