766250257 has 8 divisors (see below), whose sum is σ = 778153376. Its totient is φ = 754360992.

The previous prime is 766250227. The next prime is 766250263. The reversal of 766250257 is 752052667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 766250257 - 2¹⁹ = 765725969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (766250227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189418 + ... + 193420.

It is an arithmetic number, because the mean of its divisors is an integer number (97269172).

Almost surely, 2^766250257 is an apocalyptic number.

It is an amenable number.

766250257 is a deficient number, since it is larger than the sum of its proper divisors (11903119).

766250257 is a wasteful number, since it uses less digits than its factorization.

766250257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6927.

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 766250257 is about 27681.2257134687. The cubic root of 766250257 is about 915.0753944663.

The spelling of 766250257 in words is "seven hundred sixty-six million, two hundred fifty thousand, two hundred fifty-seven".