670011811 has 8 divisors (see below), whose sum is σ = 766298880. Its totient is φ = 573867528.

The previous prime is 670011809. The next prime is 670011833. The reversal of 670011811 is 118110076.

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

It is a cyclic number.

It is not a de Polignac number, because 670011811 - 2¹ = 670011809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670011841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25441 + ... + 44578.

It is an arithmetic number, because the mean of its divisors is an integer number (95787360).

Almost surely, 2^670011811 is an apocalyptic number.

670011811 is a deficient number, since it is larger than the sum of its proper divisors (96287069).

670011811 is a wasteful number, since it uses less digits than its factorization.

670011811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71393.

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 670011811 is about 25884.5863594534. The cubic root of 670011811 is about 875.0391540575.

Adding to 670011811 its reverse (118110076), we get a palindrome (788121887).

The spelling of 670011811 in words is "six hundred seventy million, eleven thousand, eight hundred eleven".