1677632345 has 16 divisors (see below), whose sum is σ = 2049987072. Its totient is φ = 1317720960.

The previous prime is 1677632329. The next prime is 1677632357. The reversal of 1677632345 is 5432367761.

It is not a de Polignac number, because 1677632345 - 2⁴ = 1677632329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1677632296 and 1677632305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71090 + ... + 91700.

It is an arithmetic number, because the mean of its divisors is an integer number (128124192).

Almost surely, 2^1677632345 is an apocalyptic number.

It is an amenable number.

1677632345 is a deficient number, since it is larger than the sum of its proper divisors (372354727).

1677632345 is a wasteful number, since it uses less digits than its factorization.

1677632345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20912.

The product of its digits is 635040, while the sum is 44.

The square root of 1677632345 is about 40958.9104469345. The cubic root of 1677632345 is about 1188.2256694059.

The spelling of 1677632345 in words is "one billion, six hundred seventy-seven million, six hundred thirty-two thousand, three hundred forty-five".