655466400 has 216 divisors, whose sum is σ = 2352036960. Its totient is φ = 171717120.

The previous prime is 655466393. The next prime is 655466419. The reversal of 655466400 is 4664556.

It is a happy number.

655466400 is a `hidden beast` number, since 6 + 5 + 5 + 4 + 6 + 640 + 0 = 666.

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

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, 424029 + ... + 425571.

It is an arithmetic number, because the mean of its divisors is an integer number (10889060).

Almost surely, 2^655466400 is an apocalyptic number.

655466400 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 655466400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176018480).

655466400 is an abundant number, since it is smaller than the sum of its proper divisors (1696570560).

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

655466400 is a wasteful number, since it uses less digits than its factorization.

655466400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628 (or 1612 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 655466400 is about 25602.0780406591. The cubic root of 655466400 is about 868.6606422592.

The spelling of 655466400 in words is "six hundred fifty-five million, four hundred sixty-six thousand, four hundred".