678458013 has 16 divisors (see below), whose sum is σ = 927054336. Its totient is φ = 441215280.

The previous prime is 678458009. The next prime is 678458017. The reversal of 678458013 is 310854876.

It is an interprime number because it is at equal distance from previous prime (678458009) and next prime (678458017).

It is not a de Polignac number, because 678458013 - 2² = 678458009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678458017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4318 + ... + 37088.

It is an arithmetic number, because the mean of its divisors is an integer number (57940896).

Almost surely, 2^678458013 is an apocalyptic number.

It is an amenable number.

678458013 is a deficient number, since it is larger than the sum of its proper divisors (248596323).

678458013 is a wasteful number, since it uses less digits than its factorization.

678458013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32944.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 678458013 is about 26047.2265894087. The cubic root of 678458013 is about 878.7007397855.

The spelling of 678458013 in words is "six hundred seventy-eight million, four hundred fifty-eight thousand, thirteen".