407645 has 16 divisors (see below), whose sum is σ = 589440. Its totient is φ = 264384.

The previous prime is 407639. The next prime is 407651. The reversal of 407645 is 546704.

It is an interprime number because it is at equal distance from previous prime (407639) and next prime (407651).

It is a cyclic number.

It is not a de Polignac number, because 407645 - 2¹² = 403549 is a prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 407645.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359 + ... + 971.

It is an arithmetic number, because the mean of its divisors is an integer number (36840).

2⁴⁰⁷⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

407645 is a deficient number, since it is larger than the sum of its proper divisors (181795).

407645 is a wasteful number, since it uses less digits than its factorization.

407645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 407645 is about 638.4708294041. The cubic root of 407645 is about 74.1470778268.

The spelling of 407645 in words is "four hundred seven thousand, six hundred forty-five".