1772766 has 40 divisors (see below), whose sum is σ = 4112064. Its totient is φ = 570240.

The previous prime is 1772759. The next prime is 1772767. The reversal of 1772766 is 6672771.

It is a self number, because there is not a number n which added to its sum of digits gives 1772766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1772767) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4846 + ... + 5198.

2^1772766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1772766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2056032).

1772766 is an abundant number, since it is smaller than the sum of its proper divisors (2339298).

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

1772766 is a wasteful number, since it uses less digits than its factorization.

1772766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 389 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 1772766 is about 1331.4525902187. The cubic root of 1772766 is about 121.0274281559.

The spelling of 1772766 in words is "one million, seven hundred seventy-two thousand, seven hundred sixty-six".