766542807 has 6 divisors (see below), whose sum is σ = 1107228512. Its totient is φ = 511028532.

The previous prime is 766542737. The next prime is 766542839. The reversal of 766542807 is 708245667.

It is not a de Polignac number, because 766542807 - 2¹¹ = 766540759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766542307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42585703 + ... + 42585720.

Almost surely, 2^766542807 is an apocalyptic number.

766542807 is a deficient number, since it is larger than the sum of its proper divisors (340685705).

766542807 is a wasteful number, since it uses less digits than its factorization.

766542807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85171429 (or 85171426 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The square root of 766542807 is about 27686.5094766386. The cubic root of 766542807 is about 915.1918365129.

The spelling of 766542807 in words is "seven hundred sixty-six million, five hundred forty-two thousand, eight hundred seven".