56783620 has 48 divisors (see below), whose sum is σ = 122492160. Its totient is φ = 22104576.

The previous prime is 56783611. The next prime is 56783627. The reversal of 56783620 is 2638765.

It is a self number, because there is not a number n which added to its sum of digits gives 56783620.

It is not an unprimeable number, because it can be changed into a prime (56783627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130924 + ... + 131356.

It is an arithmetic number, because the mean of its divisors is an integer number (2551920).

Almost surely, 2^56783620 is an apocalyptic number.

It is an amenable number.

56783620 is an abundant number, since it is smaller than the sum of its proper divisors (65708540).

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

56783620 is a wasteful number, since it uses less digits than its factorization.

56783620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 602 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 56783620 is about 7535.4906940424. The cubic root of 56783620 is about 384.3625139267.

The spelling of 56783620 in words is "fifty-six million, seven hundred eighty-three thousand, six hundred twenty".