404625667 has 2 divisors, whose sum is σ = 404625668. Its totient is φ = 404625666.

The previous prime is 404625659. The next prime is 404625677. The reversal of 404625667 is 766526404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404625667 - 2³ = 404625659 is a prime.

It is not a weakly prime, because it can be changed into another prime (404625607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202312833 + 202312834.

It is an arithmetic number, because the mean of its divisors is an integer number (202312834).

Almost surely, 2^404625667 is an apocalyptic number.

404625667 is a deficient number, since it is larger than the sum of its proper divisors (1).

404625667 is an equidigital number, since it uses as much as digits as its factorization.

404625667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 404625667 is about 20115.3092693103. The cubic root of 404625667 is about 739.6356052282.

The spelling of 404625667 in words is "four hundred four million, six hundred twenty-five thousand, six hundred sixty-seven".