2401665 has 32 divisors (see below), whose sum is σ = 4458240. Its totient is φ = 1081344.

The previous prime is 2401639. The next prime is 2401667. The reversal of 2401665 is 5661042.

It is not a de Polignac number, because 2401665 - 2⁷ = 2401537 is a prime.

2401665 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2401667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9217 + ... + 9473.

It is an arithmetic number, because the mean of its divisors is an integer number (139320).

2^2401665 is an apocalyptic number.

It is an amenable number.

2401665 is a deficient number, since it is larger than the sum of its proper divisors (2056575).

2401665 is a wasteful number, since it uses less digits than its factorization.

2401665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2401665 is about 1549.7306217533. The cubic root of 2401665 is about 133.9175441333.

The spelling of 2401665 in words is "two million, four hundred one thousand, six hundred sixty-five".