766540245 has 8 divisors (see below), whose sum is σ = 1226464416. Its totient is φ = 408821456.

The previous prime is 766540241. The next prime is 766540253. The reversal of 766540245 is 542045667.

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 766540245 - 2² = 766540241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766540241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25551327 + ... + 25551356.

It is an arithmetic number, because the mean of its divisors is an integer number (153308052).

Almost surely, 2^766540245 is an apocalyptic number.

It is an amenable number.

766540245 is a deficient number, since it is larger than the sum of its proper divisors (459924171).

766540245 is a wasteful number, since it uses less digits than its factorization.

766540245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51102691.

The product of its (nonzero) digits is 201600, while the sum is 39.

The square root of 766540245 is about 27686.4632085790. The cubic root of 766540245 is about 915.1908169029.

The spelling of 766540245 in words is "seven hundred sixty-six million, five hundred forty thousand, two hundred forty-five".