1377056664 has 48 divisors (see below), whose sum is σ = 3733558920. Its totient is φ = 458522880.

The previous prime is 1377056657. The next prime is 1377056669. The reversal of 1377056664 is 4666507731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377056669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60064 + ... + 79760.

Almost surely, 2^1377056664 is an apocalyptic number.

It is an amenable number.

1377056664 is an abundant number, since it is smaller than the sum of its proper divisors (2356502256).

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

1377056664 is a wasteful number, since it uses less digits than its factorization.

1377056664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20680 (or 20673 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 1377056664 is about 37108.7141248521. The cubic root of 1377056664 is about 1112.5441908802.

The spelling of 1377056664 in words is "one billion, three hundred seventy-seven million, fifty-six thousand, six hundred sixty-four".