666536351 has 16 divisors (see below), whose sum is σ = 730181760. Its totient is φ = 604730880.

The previous prime is 666536347. The next prime is 666536369. The reversal of 666536351 is 153635666.

It is not a de Polignac number, because 666536351 - 2² = 666536347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 666536299 and 666536308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666536341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246161 + ... + 248853.

It is an arithmetic number, because the mean of its divisors is an integer number (45636360).

Almost surely, 2^666536351 is an apocalyptic number.

666536351 is a deficient number, since it is larger than the sum of its proper divisors (63645409).

666536351 is a wasteful number, since it uses less digits than its factorization.

666536351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026.

The product of its digits is 291600, while the sum is 41.

The square root of 666536351 is about 25817.3652993484. The cubic root of 666536351 is about 873.5235404167.

The spelling of 666536351 in words is "six hundred sixty-six million, five hundred thirty-six thousand, three hundred fifty-one".