423626653 has 4 divisors (see below), whose sum is σ = 435076060. Its totient is φ = 412177248.

The previous prime is 423626617. The next prime is 423626737. The reversal of 423626653 is 356626324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 290293444 + 133333209 = 17038^2 + 11547^2 .

It is a cyclic number.

It is not a de Polignac number, because 423626653 - 2¹⁷ = 423495581 is a prime.

It is a super-2 number, since 2×423626653² = 358919082263964818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 11449369 = 423626653 / (4 + 2 + 3 + 6 + 2 + 6 + 6 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423626053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5724648 + ... + 5724721.

It is an arithmetic number, because the mean of its divisors is an integer number (108769015).

Almost surely, 2^423626653 is an apocalyptic number.

It is an amenable number.

423626653 is a deficient number, since it is larger than the sum of its proper divisors (11449407).

423626653 is a wasteful number, since it uses less digits than its factorization.

423626653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11449406.

The product of its digits is 155520, while the sum is 37.

The square root of 423626653 is about 20582.1926188635. The cubic root of 423626653 is about 751.0365832594.

The spelling of 423626653 in words is "four hundred twenty-three million, six hundred twenty-six thousand, six hundred fifty-three".