1970644 has 12 divisors (see below), whose sum is σ = 3714004. Its totient is φ = 909504.

The previous prime is 1970641. The next prime is 1970677. The reversal of 1970644 is 4460791.

It can be written as a sum of positive squares in 2 ways, for example, as 115600 + 1855044 = 340^2 + 1362^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970641) 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, 18897 + ... + 19000.

2^1970644 is an apocalyptic number.

It is an amenable number.

1970644 is a deficient number, since it is larger than the sum of its proper divisors (1743360).

1970644 is a wasteful number, since it uses less digits than its factorization.

1970644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37914 (or 37912 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1970644 is about 1403.7962815167. The cubic root of 1970644 is about 125.3726267573.

The spelling of 1970644 in words is "one million, nine hundred seventy thousand, six hundred forty-four".