2170725646 has 8 divisors (see below), whose sum is σ = 3276828360. Its totient is φ = 1078449528.

The previous prime is 2170725637. The next prime is 2170725659. The reversal of 2170725646 is 6465270712.

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

It is a junction number, because it is equal to n+sod(n) for n = 2170725599 and 2170725608.

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, 3456256 + ... + 3456883.

It is an arithmetic number, because the mean of its divisors is an integer number (409603545).

Almost surely, 2^2170725646 is an apocalyptic number.

2170725646 is a deficient number, since it is larger than the sum of its proper divisors (1106102714).

2170725646 is a wasteful number, since it uses less digits than its factorization.

2170725646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6913298.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 2170725646 is about 46591.0468437875. The cubic root of 2170725646 is about 1294.7968845086.

The spelling of 2170725646 in words is "two billion, one hundred seventy million, seven hundred twenty-five thousand, six hundred forty-six".