677406834581 has 8 divisors (see below), whose sum is σ = 680909870784. Its totient is φ = 673909519680.

The previous prime is 677406834553. The next prime is 677406834623. The reversal of 677406834581 is 185438604776.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 677406834581 - 2¹⁰ = 677406833557 is a prime.

It is a super-2 number, since 2×677406834581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 677406834581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677406834521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1192811 + ... + 1666616.

It is an arithmetic number, because the mean of its divisors is an integer number (85113733848).

Almost surely, 2^677406834581 is an apocalyptic number.

It is an amenable number.

677406834581 is a deficient number, since it is larger than the sum of its proper divisors (3503036203).

677406834581 is a wasteful number, since it uses less digits than its factorization.

677406834581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860651.

The product of its (nonzero) digits is 27095040, while the sum is 59.

The spelling of 677406834581 in words is "six hundred seventy-seven billion, four hundred six million, eight hundred thirty-four thousand, five hundred eighty-one".