70818811 has 4 divisors (see below), whose sum is σ = 80935792. Its totient is φ = 60701832.

The previous prime is 70818809. The next prime is 70818829. The reversal of 70818811 is 11881807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11881807 = 7 ⋅1697401.

It is a cyclic number.

It is not a de Polignac number, because 70818811 - 2¹ = 70818809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70818211) 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, 5058480 + ... + 5058493.

It is an arithmetic number, because the mean of its divisors is an integer number (20233948).

Almost surely, 2^70818811 is an apocalyptic number.

70818811 is a deficient number, since it is larger than the sum of its proper divisors (10116981).

70818811 is a wasteful number, since it uses less digits than its factorization.

70818811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10116980.

The product of its (nonzero) digits is 3584, while the sum is 34.

The square root of 70818811 is about 8415.3913159163. The cubic root of 70818811 is about 413.7292351520.

The spelling of 70818811 in words is "seventy million, eight hundred eighteen thousand, eight hundred eleven".