408651 has 4 divisors (see below), whose sum is σ = 544872. Its totient is φ = 272432.

The previous prime is 408643. The next prime is 408659. The reversal of 408651 is 156804.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (408643) and next prime (408659).

It is a cyclic number.

It is not a de Polignac number, because 408651 - 2³ = 408643 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (408659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68106 + ... + 68111.

It is an arithmetic number, because the mean of its divisors is an integer number (136218).

2⁴⁰⁸⁶⁵¹ is an apocalyptic number.

408651 is a deficient number, since it is larger than the sum of its proper divisors (136221).

408651 is a wasteful number, since it uses less digits than its factorization.

408651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136220.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 408651 is about 639.2581638118. The cubic root of 408651 is about 74.2080219360.

The spelling of 408651 in words is "four hundred eight thousand, six hundred fifty-one".