655078788 has 144 divisors (see below), whose sum is σ = 2047368960. Its totient is φ = 171977472.

The previous prime is 655078777. The next prime is 655078807. The reversal of 655078788 is 887870556.

It is a happy number.

655078788 is a `hidden beast` number, since 6 + 550 + 7 + 8 + 7 + 88 = 666.

It is a super-3 number, since 3×655078788³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1175806 + ... + 1176362.

It is an arithmetic number, because the mean of its divisors is an integer number (14217840).

Almost surely, 2^655078788 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 655078788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1023684480).

655078788 is an abundant number, since it is smaller than the sum of its proper divisors (1392290172).

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

655078788 is a wasteful number, since it uses less digits than its factorization.

655078788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 54.

The square root of 655078788 is about 25594.5069888052. The cubic root of 655078788 is about 868.4893801468.

The spelling of 655078788 in words is "six hundred fifty-five million, seventy-eight thousand, seven hundred eighty-eight".