1376664 has 32 divisors (see below), whose sum is σ = 3624000. Its totient is φ = 434592.

The previous prime is 1376653. The next prime is 1376693. The reversal of 1376664 is 4666731.

1376664 = 17² + 18² + ... + 160².

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1054 + ... + 1965.

It is an arithmetic number, because the mean of its divisors is an integer number (113250).

2^1376664 is an apocalyptic number.

It is an amenable number.

1376664 is an abundant number, since it is smaller than the sum of its proper divisors (2247336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1376664 is a wasteful number, since it uses less digits than its factorization.

1376664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047 (or 3043 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

The square root of 1376664 is about 1173.3132574040. The cubic root of 1376664 is about 111.2438434501.

The spelling of 1376664 in words is "one million, three hundred seventy-six thousand, six hundred sixty-four".