123662647 has 2 divisors, whose sum is σ = 123662648. Its totient is φ = 123662646.

The previous prime is 123662633. The next prime is 123662719. The reversal of 123662647 is 746266321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123662647 - 2¹¹ = 123660599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123632647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61831323 + 61831324.

It is an arithmetic number, because the mean of its divisors is an integer number (61831324).

Almost surely, 2^123662647 is an apocalyptic number.

123662647 is a deficient number, since it is larger than the sum of its proper divisors (1).

123662647 is an equidigital number, since it uses as much as digits as its factorization.

123662647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 37.

The square root of 123662647 is about 11120.3708121627. The cubic root of 123662647 is about 498.2104654399.

The spelling of 123662647 in words is "one hundred twenty-three million, six hundred sixty-two thousand, six hundred forty-seven".