766072189 has 2 divisors, whose sum is σ = 766072190. Its totient is φ = 766072188.

The previous prime is 766072169. The next prime is 766072259. The reversal of 766072189 is 981270667.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 761484025 + 4588164 = 27595^2 + 2142^2 .

It is a cyclic number.

It is not a de Polignac number, because 766072189 - 2⁵ = 766072157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766072169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383036094 + 383036095.

It is an arithmetic number, because the mean of its divisors is an integer number (383036095).

Almost surely, 2^766072189 is an apocalyptic number.

It is an amenable number.

766072189 is a deficient number, since it is larger than the sum of its proper divisors (1).

766072189 is an equidigital number, since it uses as much as digits as its factorization.

766072189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 766072189 is about 27678.0091227675. The cubic root of 766072189 is about 915.0045045415.

The spelling of 766072189 in words is "seven hundred sixty-six million, seventy-two thousand, one hundred eighty-nine".