766728545 has 8 divisors (see below), whose sum is σ = 1003717440. Its totient is φ = 557620720.

The previous prime is 766728533. The next prime is 766728559. The reversal of 766728545 is 545827667.

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

It is not a de Polignac number, because 766728545 - 2⁶ = 766728481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766728493 and 766728502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6970205 + ... + 6970314.

It is an arithmetic number, because the mean of its divisors is an integer number (125464680).

Almost surely, 2^766728545 is an apocalyptic number.

It is an amenable number.

766728545 is a deficient number, since it is larger than the sum of its proper divisors (236988895).

766728545 is a wasteful number, since it uses less digits than its factorization.

766728545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13940535.

The product of its digits is 2822400, while the sum is 50.

The square root of 766728545 is about 27689.8635785733. The cubic root of 766728545 is about 915.2657493990.

The spelling of 766728545 in words is "seven hundred sixty-six million, seven hundred twenty-eight thousand, five hundred forty-five".