1461665 has 8 divisors (see below), whose sum is σ = 1762728. Its totient is φ = 1163520.

The previous prime is 1461661. The next prime is 1461667. The reversal of 1461665 is 5661641.

It can be written as a sum of positive squares in 4 ways, for example, as 38416 + 1423249 = 196^2 + 1193^2 .

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

It is not a de Polignac number, because 1461665 - 2² = 1461661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1461661) 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, 599 + ... + 1811.

It is an arithmetic number, because the mean of its divisors is an integer number (220341).

2^1461665 is an apocalyptic number.

It is an amenable number.

1461665 is a deficient number, since it is larger than the sum of its proper divisors (301063).

1461665 is a wasteful number, since it uses less digits than its factorization.

1461665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459.

The product of its digits is 4320, while the sum is 29.

The square root of 1461665 is about 1208.9933829430. The cubic root of 1461665 is about 113.4878275547.

The spelling of 1461665 in words is "one million, four hundred sixty-one thousand, six hundred sixty-five".