666536053 has 8 divisors (see below), whose sum is σ = 688376576. Its totient is φ = 644716800.

The previous prime is 666536023. The next prime is 666536069. The reversal of 666536053 is 350635666.

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

It is a cyclic number.

It is not a de Polignac number, because 666536053 - 2¹³ = 666527861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 666535997 and 666536015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666536023) 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, 80725 + ... + 88597.

It is an arithmetic number, because the mean of its divisors is an integer number (86047072).

Almost surely, 2^666536053 is an apocalyptic number.

It is an amenable number.

666536053 is a deficient number, since it is larger than the sum of its proper divisors (21840523).

666536053 is a wasteful number, since it uses less digits than its factorization.

666536053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10635.

The product of its (nonzero) digits is 291600, while the sum is 40.

The square root of 666536053 is about 25817.3595280385. The cubic root of 666536053 is about 873.5234102363.

The spelling of 666536053 in words is "six hundred sixty-six million, five hundred thirty-six thousand, fifty-three".