677648539 has 8 divisors (see below), whose sum is σ = 705321360. Its totient is φ = 650262816.

The previous prime is 677648537. The next prime is 677648551. The reversal of 677648539 is 935846776.

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 677648539 - 2¹ = 677648537 is a prime.

It is a super-3 number, since 3×677648539³ (a number of 27 digits) contains 333 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 677648539.

It is not an unprimeable number, because it can be changed into a prime (677648537) 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, 66952 + ... + 76405.

It is an arithmetic number, because the mean of its divisors is an integer number (88165170).

Almost surely, 2^677648539 is an apocalyptic number.

677648539 is a deficient number, since it is larger than the sum of its proper divisors (27672821).

677648539 is a wasteful number, since it uses less digits than its factorization.

677648539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143549.

The product of its digits is 7620480, while the sum is 55.

The square root of 677648539 is about 26031.6833685415. The cubic root of 677648539 is about 878.3511389471.

The spelling of 677648539 in words is "six hundred seventy-seven million, six hundred forty-eight thousand, five hundred thirty-nine".