534568778 has 4 divisors (see below), whose sum is σ = 801853170. Its totient is φ = 267284388.

The previous prime is 534568777. The next prime is 534568787. The reversal of 534568778 is 877865435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 877865435 = 5 ⋅175573087.

It can be written as a sum of positive squares in only one way, i.e., 460660369 + 73908409 = 21463^2 + 8597^2 .

It is not an unprimeable number, because it can be changed into a prime (534568777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133642193 + ... + 133642196.

Almost surely, 2^534568778 is an apocalyptic number.

534568778 is a deficient number, since it is larger than the sum of its proper divisors (267284392).

534568778 is a wasteful number, since it uses less digits than its factorization.

534568778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267284391.

The product of its digits is 5644800, while the sum is 53.

The square root of 534568778 is about 23120.7434569047. The cubic root of 534568778 is about 811.5859685217.

The spelling of 534568778 in words is "five hundred thirty-four million, five hundred sixty-eight thousand, seven hundred seventy-eight".