680182477 has 4 divisors (see below), whose sum is σ = 732504220. Its totient is φ = 627860736.

The previous prime is 680182469. The next prime is 680182499. The reversal of 680182477 is 774281086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 774281086 = 2 ⋅387140543.

It can be written as a sum of positive squares in 2 ways, for example, as 440118441 + 240064036 = 20979^2 + 15494^2 .

It is a cyclic number.

It is not a de Polignac number, because 680182477 - 2³ = 680182469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680182417) 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, 26160852 + ... + 26160877.

It is an arithmetic number, because the mean of its divisors is an integer number (183126055).

Almost surely, 2^680182477 is an apocalyptic number.

It is an amenable number.

680182477 is a deficient number, since it is larger than the sum of its proper divisors (52321743).

680182477 is a wasteful number, since it uses less digits than its factorization.

680182477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52321742.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 680182477 is about 26080.3082228719. The cubic root of 680182477 is about 879.4445862485. Note that the first 3 decimals are identical.

The spelling of 680182477 in words is "six hundred eighty million, one hundred eighty-two thousand, four hundred seventy-seven".