872077667 has 4 divisors (see below), whose sum is σ = 893347896. Its totient is φ = 850807440.

The previous prime is 872077651. The next prime is 872077681. The reversal of 872077667 is 766770278.

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 872077667 - 2⁴ = 872077651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872077267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10635053 + ... + 10635134.

It is an arithmetic number, because the mean of its divisors is an integer number (223336974).

Almost surely, 2^872077667 is an apocalyptic number.

872077667 is a deficient number, since it is larger than the sum of its proper divisors (21270229).

872077667 is a wasteful number, since it uses less digits than its factorization.

872077667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21270228.

The product of its (nonzero) digits is 1382976, while the sum is 50.

The square root of 872077667 is about 29530.9611594340. The cubic root of 872077667 is about 955.3995995919.

The spelling of 872077667 in words is "eight hundred seventy-two million, seventy-seven thousand, six hundred sixty-seven".