1677942 has 64 divisors (see below), whose sum is σ = 4469760. Its totient is φ = 456192.

The previous prime is 1677941. The next prime is 1677961. The reversal of 1677942 is 2497761.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1677897 and 1677906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1677941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8598 + ... + 8790.

It is an arithmetic number, because the mean of its divisors is an integer number (69840).

2^1677942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1677942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2234880).

1677942 is an abundant number, since it is smaller than the sum of its proper divisors (2791818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1677942 is a wasteful number, since it uses less digits than its factorization.

1677942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 228 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 1677942 is about 1295.3540056679. The cubic root of 1677942 is about 118.8298771912.

The spelling of 1677942 in words is "one million, six hundred seventy-seven thousand, nine hundred forty-two".