1961727 has 12 divisors (see below), whose sum is σ = 2687880. Its totient is φ = 1272640.

The previous prime is 1961683. The next prime is 1961737. The reversal of 1961727 is 7271691.

It is not a de Polignac number, because 1961727 - 2¹⁰ = 1960703 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4849 + ... + 5237.

It is an arithmetic number, because the mean of its divisors is an integer number (223990).

2^1961727 is an apocalyptic number.

1961727 is a deficient number, since it is larger than the sum of its proper divisors (726153).

1961727 is an equidigital number, since it uses as much as digits as its factorization.

1961727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474 (or 433 counting only the distinct ones).

The product of its digits is 5292, while the sum is 33.

The square root of 1961727 is about 1400.6166499082. The cubic root of 1961727 is about 125.1832405852.

The spelling of 1961727 in words is "one million, nine hundred sixty-one thousand, seven hundred twenty-seven".