678071622 has 16 divisors (see below), whose sum is σ = 1435916592. Its totient is φ = 212728320.

The previous prime is 678071621. The next prime is 678071623. The reversal of 678071622 is 226170876.

It is an interprime number because it is at equal distance from previous prime (678071621) and next prime (678071623).

It is a super-2 number, since 2×678071622² = 919562249123421768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678071621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3323779 + ... + 3323982.

It is an arithmetic number, because the mean of its divisors is an integer number (89744787).

Almost surely, 2^678071622 is an apocalyptic number.

678071622 is an abundant number, since it is smaller than the sum of its proper divisors (757844970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678071622 is a wasteful number, since it uses less digits than its factorization.

678071622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6647783.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 678071622 is about 26039.8084094334. The cubic root of 678071622 is about 878.5338974629.

The spelling of 678071622 in words is "six hundred seventy-eight million, seventy-one thousand, six hundred twenty-two".