766897253 has 2 divisors, whose sum is σ = 766897254. Its totient is φ = 766897252.

The previous prime is 766897249. The next prime is 766897277. The reversal of 766897253 is 352798667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430064644 + 336832609 = 20738^2 + 18353^2 .

It is a cyclic number.

It is not a de Polignac number, because 766897253 - 2² = 766897249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766897195 and 766897204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (766197253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 383448626 + 383448627.

It is an arithmetic number, because the mean of its divisors is an integer number (383448627).

Almost surely, 2^766897253 is an apocalyptic number.

It is an amenable number.

766897253 is a deficient number, since it is larger than the sum of its proper divisors (1).

766897253 is an equidigital number, since it uses as much as digits as its factorization.

766897253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The square root of 766897253 is about 27692.9097965526. The cubic root of 766897253 is about 915.3328749943.

The spelling of 766897253 in words is "seven hundred sixty-six million, eight hundred ninety-seven thousand, two hundred fifty-three".