1864668 has 24 divisors (see below), whose sum is σ = 4685968. Its totient is φ = 573696.

The previous prime is 1864661. The next prime is 1864691. The reversal of 1864668 is 8664681.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1864661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5821 + ... + 6132.

2^1864668 is an apocalyptic number.

It is an amenable number.

1864668 is an abundant number, since it is smaller than the sum of its proper divisors (2821300).

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

1864668 is a wasteful number, since it uses less digits than its factorization.

1864668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11973 (or 11971 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 1864668 is about 1365.5284691283. The cubic root of 1864668 is about 123.0836894918.

The spelling of 1864668 in words is "one million, eight hundred sixty-four thousand, six hundred sixty-eight".