1423621647 has 36 divisors (see below), whose sum is σ = 2402778456. Its totient is φ = 809857440.

The previous prime is 1423621631. The next prime is 1423621651. The reversal of 1423621647 is 7461263241.

1423621647 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 6 + 2 + 1 + 647 = 666.

It is not a de Polignac number, because 1423621647 - 2⁴ = 1423621631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423621627) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 92997 + ... + 107217.

It is an arithmetic number, because the mean of its divisors is an integer number (66743846).

Almost surely, 2^1423621647 is an apocalyptic number.

1423621647 is a deficient number, since it is larger than the sum of its proper divisors (979156809).

1423621647 is a wasteful number, since it uses less digits than its factorization.

1423621647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14468 (or 14458 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 1423621647 is about 37730.9110279622. The cubic root of 1423621647 is about 1124.9456163340.

Adding to 1423621647 its reverse (7461263241), we get a palindrome (8884884888).

The spelling of 1423621647 in words is "one billion, four hundred twenty-three million, six hundred twenty-one thousand, six hundred forty-seven".