677608249 has 4 divisors (see below), whose sum is σ = 679023360. Its totient is φ = 676193140.

The previous prime is 677608247. The next prime is 677608289. The reversal of 677608249 is 942806776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 677608249 - 2¹ = 677608247 is a prime.

It is a super-3 number, since 3×677608249³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677608247) 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, 706837 + ... + 707794.

It is an arithmetic number, because the mean of its divisors is an integer number (169755840).

Almost surely, 2^677608249 is an apocalyptic number.

It is an amenable number.

677608249 is a deficient number, since it is larger than the sum of its proper divisors (1415111).

677608249 is a wasteful number, since it uses less digits than its factorization.

677608249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415110.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The square root of 677608249 is about 26030.9094923708. The cubic root of 677608249 is about 878.3337309710. Note that the first 3 decimals are identical.

The spelling of 677608249 in words is "six hundred seventy-seven million, six hundred eight thousand, two hundred forty-nine".