676691749 has 8 divisors (see below), whose sum is σ = 720641880. Its totient is φ = 633202176.

The previous prime is 676691747. The next prime is 676691753. The reversal of 676691749 is 947196676.

It can be written as a sum of positive squares in 4 ways, for example, as 128663649 + 548028100 = 11343^2 + 23410^2 .

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 676691749 - 2¹ = 676691747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 676691749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676691747) 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, 112104 + ... + 117985.

It is an arithmetic number, because the mean of its divisors is an integer number (90080235).

Almost surely, 2^676691749 is an apocalyptic number.

It is an amenable number.

676691749 is a deficient number, since it is larger than the sum of its proper divisors (43950131).

676691749 is a wasteful number, since it uses less digits than its factorization.

676691749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230279.

The product of its digits is 3429216, while the sum is 55.

The square root of 676691749 is about 26013.2994639281. The cubic root of 676691749 is about 877.9375551226.

The spelling of 676691749 in words is "six hundred seventy-six million, six hundred ninety-one thousand, seven hundred forty-nine".