655358400 has 252 divisors, whose sum is σ = 2365790544. Its totient is φ = 172032000.

The previous prime is 655358387. The next prime is 655358411. The reversal of 655358400 is 4853556.

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 polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1022080 + ... + 1022720.

Almost surely, 2^655358400 is an apocalyptic number.

655358400 is a gapful number since it is divisible by the number (60) 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 655358400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1182895272).

655358400 is an abundant number, since it is smaller than the sum of its proper divisors (1710432144).

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

655358400 is a wasteful number, since it uses less digits than its factorization.

655358400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 655358400 is about 25599.9687499809. The cubic root of 655358400 is about 868.6129304302.

The spelling of 655358400 in words is "six hundred fifty-five million, three hundred fifty-eight thousand, four hundred".