612655680 has 224 divisors, whose sum is σ = 2394411264. Its totient is φ = 129245184.

The previous prime is 612655679. The next prime is 612655709. The reversal of 612655680 is 86556216.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83854 + ... + 90866.

It is an arithmetic number, because the mean of its divisors is an integer number (10689336).

Almost surely, 2^612655680 is an apocalyptic number.

612655680 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 612655680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1197205632).

612655680 is an abundant number, since it is smaller than the sum of its proper divisors (1781755584).

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

612655680 is a wasteful number, since it uses less digits than its factorization.

612655680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7053 (or 7043 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 612655680 is about 24751.8823526616. The cubic root of 612655680 is about 849.3215716893.

The spelling of 612655680 in words is "six hundred twelve million, six hundred fifty-five thousand, six hundred eighty".