406624651 has 2 divisors, whose sum is σ = 406624652. Its totient is φ = 406624650.

The previous prime is 406624633. The next prime is 406624693. The reversal of 406624651 is 156426604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406624651 - 2¹³ = 406616459 is a prime.

It is not a weakly prime, because it can be changed into another prime (406624601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203312325 + 203312326.

It is an arithmetic number, because the mean of its divisors is an integer number (203312326).

Almost surely, 2^406624651 is an apocalyptic number.

406624651 is a deficient number, since it is larger than the sum of its proper divisors (1).

406624651 is an equidigital number, since it uses as much as digits as its factorization.

406624651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 406624651 is about 20164.9361764425. The cubic root of 406624651 is about 740.8516193785.

The spelling of 406624651 in words is "four hundred six million, six hundred twenty-four thousand, six hundred fifty-one".