677646460426 has 8 divisors (see below), whose sum is σ = 1094659666884. Its totient is φ = 312759904800.

The previous prime is 677646460369. The next prime is 677646460429. The reversal of 677646460426 is 624064646776.

It can be written as a sum of positive squares in 2 ways, for example, as 662516230401 + 15130230025 = 813951^2 + 123005^2 .

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 (677646460429) 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, 13031662675 + ... + 13031662726.

Almost surely, 2^677646460426 is an apocalyptic number.

677646460426 is a deficient number, since it is larger than the sum of its proper divisors (417013206458).

677646460426 is a wasteful number, since it uses less digits than its factorization.

677646460426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26063325416.

The product of its (nonzero) digits is 48771072, while the sum is 58.

The spelling of 677646460426 in words is "six hundred seventy-seven billion, six hundred forty-six million, four hundred sixty thousand, four hundred twenty-six".