423475637 has 6 divisors (see below), whose sum is σ = 458556642. Its totient is φ = 390900432.

The previous prime is 423475607. The next prime is 423475681. The reversal of 423475637 is 736574324.

It can be written as a sum of positive squares in 3 ways, for example, as 391876 + 423083761 = 626^2 + 20569^2 .

It is not a de Polignac number, because 423475637 - 2¹⁸ = 423213493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423475594 and 423475603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423475607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1252718 + ... + 1253055.

It is an arithmetic number, because the mean of its divisors is an integer number (76426107).

Almost surely, 2^423475637 is an apocalyptic number.

It is an amenable number.

423475637 is a deficient number, since it is larger than the sum of its proper divisors (35081005).

423475637 is a wasteful number, since it uses less digits than its factorization.

423475637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505799 (or 2505786 counting only the distinct ones).

The product of its digits is 423360, while the sum is 41.

The square root of 423475637 is about 20578.5236836854. The cubic root of 423475637 is about 750.9473285507.

The spelling of 423475637 in words is "four hundred twenty-three million, four hundred seventy-five thousand, six hundred thirty-seven".