655406976 has 256 divisors, whose sum is σ = 2152281600. Its totient is φ = 172523520.

The previous prime is 655406959. The next prime is 655406977. The reversal of 655406976 is 679604556.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655406977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2093796 + ... + 2094108.

It is an arithmetic number, because the mean of its divisors is an integer number (8407350).

Almost surely, 2^655406976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655406976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076140800).

655406976 is an abundant number, since it is smaller than the sum of its proper divisors (1496874624).

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

655406976 is a wasteful number, since it uses less digits than its factorization.

655406976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 48.

The square root of 655406976 is about 25600.9174835591. The cubic root of 655406976 is about 868.6343907992.

The spelling of 655406976 in words is "six hundred fifty-five million, four hundred six thousand, nine hundred seventy-six".