669737011 has 2 divisors, whose sum is σ = 669737012. Its totient is φ = 669737010.

The previous prime is 669736987. The next prime is 669737027. The reversal of 669737011 is 110737966.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669737011 - 2⁵ = 669736979 is a prime.

It is not a weakly prime, because it can be changed into another prime (669737041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334868505 + 334868506.

It is an arithmetic number, because the mean of its divisors is an integer number (334868506).

Almost surely, 2^669737011 is an apocalyptic number.

669737011 is a deficient number, since it is larger than the sum of its proper divisors (1).

669737011 is an equidigital number, since it uses as much as digits as its factorization.

669737011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 669737011 is about 25879.2776367502. The cubic root of 669737011 is about 874.9195075888.

It can be divided in two parts, 66973 and 7011, that added together give a square (73984 = 272²).

The spelling of 669737011 in words is "six hundred sixty-nine million, seven hundred thirty-seven thousand, eleven".