1961677 has 4 divisors (see below), whose sum is σ = 1967836. Its totient is φ = 1955520.

The previous prime is 1961671. The next prime is 1961683. The reversal of 1961677 is 7761691.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1961671) and next prime (1961683).

It can be written as a sum of positive squares in 2 ways, for example, as 1153476 + 808201 = 1074^2 + 899^2 .

It is a cyclic number.

It is not a de Polignac number, because 1961677 - 2³ = 1961669 is a prime.

It is a Duffinian number.

1961677 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961671) 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, 2574 + ... + 3247.

It is an arithmetic number, because the mean of its divisors is an integer number (491959).

2^1961677 is an apocalyptic number.

It is an amenable number.

1961677 is a deficient number, since it is larger than the sum of its proper divisors (6159).

1961677 is an equidigital number, since it uses as much as digits as its factorization.

1961677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6158.

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

The square root of 1961677 is about 1400.5988005136. The cubic root of 1961677 is about 125.1821770299.

The spelling of 1961677 in words is "one million, nine hundred sixty-one thousand, six hundred seventy-seven".