1677664 has 24 divisors (see below), whose sum is σ = 3341520. Its totient is φ = 829056.

The previous prime is 1677631. The next prime is 1677667. The reversal of 1677664 is 4667761.

1677664 is nontrivially palindromic in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1677667) 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, 3042 + ... + 3550.

It is an arithmetic number, because the mean of its divisors is an integer number (139230).

2^1677664 is an apocalyptic number.

It is an amenable number.

1677664 is a deficient number, since it is larger than the sum of its proper divisors (1663856).

1677664 is a wasteful number, since it uses less digits than its factorization.

1677664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 614 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 1677664 is about 1295.2466946493. The cubic root of 1677664 is about 118.8233142844.

The spelling of 1677664 in words is "one million, six hundred seventy-seven thousand, six hundred sixty-four".