1422647647 has 8 divisors (see below), whose sum is σ = 1463362560. Its totient is φ = 1382279640.

The previous prime is 1422647641. The next prime is 1422647659. The reversal of 1422647647 is 7467462241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1422647647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422647641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78397 + ... + 94822.

It is an arithmetic number, because the mean of its divisors is an integer number (182920320).

Almost surely, 2^1422647647 is an apocalyptic number.

1422647647 is a deficient number, since it is larger than the sum of its proper divisors (40714913).

1422647647 is a wasteful number, since it uses less digits than its factorization.

1422647647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173453.

The product of its digits is 451584, while the sum is 43.

The square root of 1422647647 is about 37718.0016305212. The cubic root of 1422647647 is about 1124.6890062511.

The spelling of 1422647647 in words is "one billion, four hundred twenty-two million, six hundred forty-seven thousand, six hundred forty-seven".