2137720670 has 8 divisors (see below), whose sum is σ = 3847897224. Its totient is φ = 855088264.

The previous prime is 2137720667. The next prime is 2137720687. The reversal of 2137720670 is 760277312.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2137720670.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106886024 + ... + 106886043.

It is an arithmetic number, because the mean of its divisors is an integer number (480987153).

Almost surely, 2^2137720670 is an apocalyptic number.

2137720670 is a deficient number, since it is larger than the sum of its proper divisors (1710176554).

2137720670 is a wasteful number, since it uses less digits than its factorization.

2137720670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213772074.

The product of its (nonzero) digits is 24696, while the sum is 35.

The square root of 2137720670 is about 46235.4914540767. The cubic root of 2137720670 is about 1288.2010599894.

Adding to 2137720670 its reverse (760277312), we get a palindrome (2897997982).

The spelling of 2137720670 in words is "two billion, one hundred thirty-seven million, seven hundred twenty thousand, six hundred seventy".