662401553 has 12 divisors (see below), whose sum is σ = 728765520. Its totient is φ = 601628280.

The previous prime is 662401517. The next prime is 662401567. The reversal of 662401553 is 355104266.

It is not a de Polignac number, because 662401553 - 2⁸ = 662401297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (662401513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189326 + ... + 192792.

It is an arithmetic number, because the mean of its divisors is an integer number (60730460).

Almost surely, 2^662401553 is an apocalyptic number.

It is an amenable number.

662401553 is a deficient number, since it is larger than the sum of its proper divisors (66363967).

662401553 is a wasteful number, since it uses less digits than its factorization.

662401553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5068 (or 5057 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 662401553 is about 25737.1628778310. The cubic root of 662401553 is about 871.7135176976.

The spelling of 662401553 in words is "six hundred sixty-two million, four hundred one thousand, five hundred fifty-three".