1672117560 has 256 divisors, whose sum is σ = 5728665600. Its totient is φ = 433714176.

The previous prime is 1672117547. The next prime is 1672117571. The reversal of 1672117560 is 657112761.

1672117560 is a `hidden beast` number, since 1 + 67 + 21 + 17 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10012597 + ... + 10012763.

It is an arithmetic number, because the mean of its divisors is an integer number (22377600).

Almost surely, 2^1672117560 is an apocalyptic number.

1672117560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1672117560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2864332800).

1672117560 is an abundant number, since it is smaller than the sum of its proper divisors (4056548040).

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

1672117560 is a wasteful number, since it uses less digits than its factorization.

1672117560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 1672117560 is about 40891.5340871433. The cubic root of 1672117560 is about 1186.9222446747.

The spelling of 1672117560 in words is "one billion, six hundred seventy-two million, one hundred seventeen thousand, five hundred sixty".