1440661 has 8 divisors (see below), whose sum is σ = 1482624. Its totient is φ = 1399440.

The previous prime is 1440641. The next prime is 1440679. The reversal of 1440661 is 1660441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1440661 - 2⁷ = 1440533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440611) 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, 7215 + ... + 7411.

It is an arithmetic number, because the mean of its divisors is an integer number (185328).

2^1440661 is an apocalyptic number.

It is an amenable number.

1440661 is a deficient number, since it is larger than the sum of its proper divisors (41963).

1440661 is a wasteful number, since it uses less digits than its factorization.

1440661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1440661 is about 1200.2753850679. The cubic root of 1440661 is about 112.9415992897.

The spelling of 1440661 in words is "one million, four hundred forty thousand, six hundred sixty-one".