8160778 has 8 divisors (see below), whose sum is σ = 12289572. Its totient is φ = 4064256.

The previous prime is 8160773. The next prime is 8160827. The reversal of 8160778 is 8770618.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4652649 + 3508129 = 2157^2 + 1873^2 .

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

It is not an unprimeable number, because it can be changed into a prime (8160773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7425 + ... + 8452.

Almost surely, 2^8160778 is an apocalyptic number.

8160778 is a deficient number, since it is larger than the sum of its proper divisors (4128794).

8160778 is a wasteful number, since it uses less digits than its factorization.

8160778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16136.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 8160778 is about 2856.7075454096. The cubic root of 8160778 is about 201.3309400132.

The spelling of 8160778 in words is "eight million, one hundred sixty thousand, seven hundred seventy-eight".