1961672 has 8 divisors (see below), whose sum is σ = 3678150. Its totient is φ = 980832.

The previous prime is 1961671. The next prime is 1961683. The reversal of 1961672 is 2761691.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1705636 + 256036 = 1306^2 + 506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1961671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122597 + ... + 122612.

2^1961672 is an apocalyptic number.

It is an amenable number.

1961672 is a deficient number, since it is larger than the sum of its proper divisors (1716478).

1961672 is a wasteful number, since it uses less digits than its factorization.

1961672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245215 (or 245211 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 1961672 is about 1400.5970155616. The cubic root of 1961672 is about 125.1820706734.

The spelling of 1961672 in words is "one million, nine hundred sixty-one thousand, six hundred seventy-two".