1677648479 has 8 divisors (see below), whose sum is σ = 1810326000. Its totient is φ = 1545489216.

The previous prime is 1677648473. The next prime is 1677648493. The reversal of 1677648479 is 9748467761.

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 1677648479 - 2⁸ = 1677648223 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 (1677648473) 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, 122822 + ... + 135795.

It is an arithmetic number, because the mean of its divisors is an integer number (226290750).

Almost surely, 2^1677648479 is an apocalyptic number.

1677648479 is a deficient number, since it is larger than the sum of its proper divisors (132677521).

1677648479 is a wasteful number, since it uses less digits than its factorization.

1677648479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259129.

The product of its digits is 14224896, while the sum is 59.

The square root of 1677648479 is about 40959.1073999422. The cubic root of 1677648479 is about 1188.2294784986.

The spelling of 1677648479 in words is "one billion, six hundred seventy-seven million, six hundred forty-eight thousand, four hundred seventy-nine".