655550787 has 16 divisors (see below), whose sum is σ = 974194560. Its totient is φ = 389676672.

The previous prime is 655550767. The next prime is 655550789. The reversal of 655550787 is 787055556.

It is not a de Polignac number, because 655550787 - 2⁶ = 655550723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655550789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337293 + ... + 339230.

It is an arithmetic number, because the mean of its divisors is an integer number (60887160).

Almost surely, 2^655550787 is an apocalyptic number.

655550787 is a deficient number, since it is larger than the sum of its proper divisors (318643773).

655550787 is a wasteful number, since it uses less digits than its factorization.

655550787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676562.

The product of its (nonzero) digits is 1470000, while the sum is 48.

The square root of 655550787 is about 25603.7260374345. The cubic root of 655550787 is about 868.6979187797.

The spelling of 655550787 in words is "six hundred fifty-five million, five hundred fifty thousand, seven hundred eighty-seven".