1961767 has 2 divisors, whose sum is σ = 1961768. Its totient is φ = 1961766.

The previous prime is 1961759. The next prime is 1961797. The reversal of 1961767 is 7671691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1961767 - 2³ = 1961759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1961737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 980883 + 980884.

It is an arithmetic number, because the mean of its divisors is an integer number (980884).

2^1961767 is an apocalyptic number.

1961767 is a deficient number, since it is larger than the sum of its proper divisors (1).

1961767 is an equidigital number, since it uses as much as digits as its factorization.

1961767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 37.

The square root of 1961767 is about 1400.6309292601. The cubic root of 1961767 is about 125.1840914164.

The spelling of 1961767 in words is "one million, nine hundred sixty-one thousand, seven hundred sixty-seven".