766680457 has 8 divisors (see below), whose sum is σ = 822260160. Its totient is φ = 712623600.

The previous prime is 766680389. The next prime is 766680461. The reversal of 766680457 is 754086667.

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 766680457 - 2⁷ = 766680329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 766680457.

It is not an unprimeable number, because it can be changed into a prime (766680157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379669 + ... + 381682.

It is an arithmetic number, because the mean of its divisors is an integer number (102782520).

Almost surely, 2^766680457 is an apocalyptic number.

It is an amenable number.

766680457 is a deficient number, since it is larger than the sum of its proper divisors (55579703).

766680457 is a wasteful number, since it uses less digits than its factorization.

766680457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761423.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The square root of 766680457 is about 27688.9952327635. The cubic root of 766680457 is about 915.2466143262.

The spelling of 766680457 in words is "seven hundred sixty-six million, six hundred eighty thousand, four hundred fifty-seven".