764700197 has 2 divisors, whose sum is σ = 764700198. Its totient is φ = 764700196.

The previous prime is 764700191. The next prime is 764700241. The reversal of 764700197 is 791007467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 694375201 + 70324996 = 26351^2 + 8386^2 .

It is a cyclic number.

It is not a de Polignac number, because 764700197 - 2²⁶ = 697591333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (764700191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382350098 + 382350099.

It is an arithmetic number, because the mean of its divisors is an integer number (382350099).

Almost surely, 2^764700197 is an apocalyptic number.

It is an amenable number.

764700197 is a deficient number, since it is larger than the sum of its proper divisors (1).

764700197 is an equidigital number, since it uses as much as digits as its factorization.

764700197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 764700197 is about 27653.2131406099. The cubic root of 764700197 is about 914.4579376677.

The spelling of 764700197 in words is "seven hundred sixty-four million, seven hundred thousand, one hundred ninety-seven".