2251720670 has 8 divisors (see below), whose sum is σ = 4053097224. Its totient is φ = 900688264.

The previous prime is 2251720661. The next prime is 2251720673. The reversal of 2251720670 is 760271522.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251720673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112586024 + ... + 112586043.

It is an arithmetic number, because the mean of its divisors is an integer number (506637153).

Almost surely, 2^2251720670 is an apocalyptic number.

2251720670 is a deficient number, since it is larger than the sum of its proper divisors (1801376554).

2251720670 is a wasteful number, since it uses less digits than its factorization.

2251720670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225172074.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 2251720670 is about 47452.2988905701. The cubic root of 2251720670 is about 1310.7046439241.

The spelling of 2251720670 in words is "two billion, two hundred fifty-one million, seven hundred twenty thousand, six hundred seventy".