608778013 has 4 divisors (see below), whose sum is σ = 617864320. Its totient is φ = 599691708.

The previous prime is 608778011. The next prime is 608778043. The reversal of 608778013 is 310877806.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 608778013 - 2¹ = 608778011 is a prime.

It is a super-2 number, since 2×608778013² = 741221338224456338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (608778011) 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, 4543053 + ... + 4543186.

It is an arithmetic number, because the mean of its divisors is an integer number (154466080).

Almost surely, 2^608778013 is an apocalyptic number.

It is an amenable number.

608778013 is a deficient number, since it is larger than the sum of its proper divisors (9086307).

608778013 is an equidigital number, since it uses as much as digits as its factorization.

608778013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9086306.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 608778013 is about 24673.4272649748. The cubic root of 608778013 is about 847.5259143435.

It can be divided in two parts, 6087 and 78013, that added together give a square (84100 = 290²).

The spelling of 608778013 in words is "six hundred eight million, seven hundred seventy-eight thousand, thirteen".