766478345 has 8 divisors (see below), whose sum is σ = 920640840. Its totient is φ = 612604800.

The previous prime is 766478329. The next prime is 766478351. The reversal of 766478345 is 543874667.

It can be written as a sum of positive squares in 4 ways, for example, as 229583104 + 536895241 = 15152^2 + 23171^2 .

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

It is not a de Polignac number, because 766478345 - 2⁴ = 766478329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766478293 and 766478302.

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, 66356 + ... + 77045.

It is an arithmetic number, because the mean of its divisors is an integer number (115080105).

Almost surely, 2^766478345 is an apocalyptic number.

It is an amenable number.

766478345 is a deficient number, since it is larger than the sum of its proper divisors (154162495).

766478345 is a wasteful number, since it uses less digits than its factorization.

766478345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144475.

The product of its digits is 3386880, while the sum is 50.

The square root of 766478345 is about 27685.3453111931. The cubic root of 766478345 is about 915.1661816073.

The spelling of 766478345 in words is "seven hundred sixty-six million, four hundred seventy-eight thousand, three hundred forty-five".