16655407 has 2 divisors, whose sum is σ = 16655408. Its totient is φ = 16655406.

The previous prime is 16655383. The next prime is 16655417. The reversal of 16655407 is 70455661.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (70455661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16655407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16655417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8327703 + 8327704.

It is an arithmetic number, because the mean of its divisors is an integer number (8327704).

Almost surely, 2^16655407 is an apocalyptic number.

16655407 is a deficient number, since it is larger than the sum of its proper divisors (1).

16655407 is an equidigital number, since it uses as much as digits as its factorization.

16655407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 16655407 is about 4081.1036497497. The cubic root of 16655407 is about 255.3789419141.

The spelling of 16655407 in words is "sixteen million, six hundred fifty-five thousand, four hundred seven".