681062027 has 4 divisors (see below), whose sum is σ = 681310056. Its totient is φ = 680814000.

The previous prime is 681061999. The next prime is 681062051. The reversal of 681062027 is 720260186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720260186 = 2 ⋅360130093.

It is a cyclic number.

It is not a de Polignac number, because 681062027 - 2²⁴ = 664284811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 681061984 and 681062002.

It is not an unprimeable number, because it can be changed into a prime (681062827) 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 3 ways as a sum of consecutive naturals, for example, 119849 + ... + 125402.

It is an arithmetic number, because the mean of its divisors is an integer number (170327514).

Almost surely, 2^681062027 is an apocalyptic number.

681062027 is a deficient number, since it is larger than the sum of its proper divisors (248029).

681062027 is a wasteful number, since it uses less digits than its factorization.

681062027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248028.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 681062027 is about 26097.1651142418. The cubic root of 681062027 is about 879.8234955059.

The spelling of 681062027 in words is "six hundred eighty-one million, sixty-two thousand, twenty-seven".