406624541 has 4 divisors (see below), whose sum is σ = 412693632. Its totient is φ = 400555452.

The previous prime is 406624507. The next prime is 406624549. The reversal of 406624541 is 145426604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406624541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 406624498 and 406624507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406624549) 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, 3034445 + ... + 3034578.

It is an arithmetic number, because the mean of its divisors is an integer number (103173408).

Almost surely, 2^406624541 is an apocalyptic number.

It is an amenable number.

406624541 is a deficient number, since it is larger than the sum of its proper divisors (6069091).

406624541 is an equidigital number, since it uses as much as digits as its factorization.

406624541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6069090.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 406624541 is about 20164.9334489356. The cubic root of 406624541 is about 740.8515525735.

The spelling of 406624541 in words is "four hundred six million, six hundred twenty-four thousand, five hundred forty-one".