656142611 has 2 divisors, whose sum is σ = 656142612. Its totient is φ = 656142610.

The previous prime is 656142583. The next prime is 656142671. The reversal of 656142611 is 116241656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 656142611 - 2¹⁴ = 656126227 is a prime.

It is not a weakly prime, because it can be changed into another prime (656142671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328071305 + 328071306.

It is an arithmetic number, because the mean of its divisors is an integer number (328071306).

Almost surely, 2^656142611 is an apocalyptic number.

656142611 is a deficient number, since it is larger than the sum of its proper divisors (1).

656142611 is an equidigital number, since it uses as much as digits as its factorization.

656142611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 656142611 is about 25615.2808104850. The cubic root of 656142611 is about 868.9592571087.

The spelling of 656142611 in words is "six hundred fifty-six million, one hundred forty-two thousand, six hundred eleven".