68523778 has 8 divisors (see below), whose sum is σ = 105563772. Its totient is φ = 33335856.

The previous prime is 68523773. The next prime is 68523779. The reversal of 68523778 is 87732586.

It can be written as a sum of positive squares in 2 ways, for example, as 62457409 + 6066369 = 7903^2 + 2463^2 .

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 (68523773) 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, 462925 + ... + 463072.

Almost surely, 2^68523778 is an apocalyptic number.

68523778 is a deficient number, since it is larger than the sum of its proper divisors (37039994).

68523778 is a wasteful number, since it uses less digits than its factorization.

68523778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926036.

The product of its digits is 564480, while the sum is 46.

The square root of 68523778 is about 8277.9090354992. The cubic root of 68523778 is about 409.2108118689.

The spelling of 68523778 in words is "sixty-eight million, five hundred twenty-three thousand, seven hundred seventy-eight".