1866772 has 24 divisors (see below), whose sum is σ = 3459456. Its totient is φ = 879648.

The previous prime is 1866757. The next prime is 1866779. The reversal of 1866772 is 2776681.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9378 + ... + 9574.

It is an arithmetic number, because the mean of its divisors is an integer number (144144).

2^1866772 is an apocalyptic number.

It is an amenable number.

1866772 is a deficient number, since it is larger than the sum of its proper divisors (1592684).

1866772 is a wasteful number, since it uses less digits than its factorization.

1866772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 325 counting only the distinct ones).

The product of its digits is 28224, while the sum is 37.

The square root of 1866772 is about 1366.2986496370. The cubic root of 1866772 is about 123.1299659588.

Subtracting 1866772 from its reverse (2776681), we obtain a palindrome (909909).

The spelling of 1866772 in words is "one million, eight hundred sixty-six thousand, seven hundred seventy-two".