2070720667 has 4 divisors (see below), whose sum is σ = 2071752376. Its totient is φ = 2069688960.

The previous prime is 2070720661. The next prime is 2070720677. The reversal of 2070720667 is 7660270702.

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 2070720667 - 2¹¹ = 2070718619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2070720661) 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, 512838 + ... + 516859.

It is an arithmetic number, because the mean of its divisors is an integer number (517938094).

Almost surely, 2^2070720667 is an apocalyptic number.

2070720667 is a deficient number, since it is larger than the sum of its proper divisors (1031709).

2070720667 is a wasteful number, since it uses less digits than its factorization.

2070720667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031708.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 2070720667 is about 45505.1718708984. The cubic root of 2070720667 is about 1274.5997804726.

The spelling of 2070720667 in words is "two billion, seventy million, seven hundred twenty thousand, six hundred sixty-seven".