666752141 has 16 divisors (see below), whose sum is σ = 735628608. Its totient is φ = 599289600.

The previous prime is 666752111. The next prime is 666752147. The reversal of 666752141 is 141257666.

It is a cyclic number.

It is not a de Polignac number, because 666752141 - 2¹⁸ = 666489997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 666752095 and 666752104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666752147) 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, 484931 + ... + 486303.

It is an arithmetic number, because the mean of its divisors is an integer number (45976788).

Almost surely, 2^666752141 is an apocalyptic number.

It is an amenable number.

666752141 is a deficient number, since it is larger than the sum of its proper divisors (68876467).

666752141 is a wasteful number, since it uses less digits than its factorization.

666752141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852.

The product of its digits is 60480, while the sum is 38.

The square root of 666752141 is about 25821.5441250131. The cubic root of 666752141 is about 873.6177974948.

The spelling of 666752141 in words is "six hundred sixty-six million, seven hundred fifty-two thousand, one hundred forty-one".