655599007 has 4 divisors (see below), whose sum is σ = 749256016. Its totient is φ = 561942000.

The previous prime is 655598987. The next prime is 655599053. The reversal of 655599007 is 700995556.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655599007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655599097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46828494 + ... + 46828507.

It is an arithmetic number, because the mean of its divisors is an integer number (187314004).

Almost surely, 2^655599007 is an apocalyptic number.

655599007 is a deficient number, since it is larger than the sum of its proper divisors (93657009).

655599007 is an equidigital number, since it uses as much as digits as its factorization.

655599007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93657008.

The product of its (nonzero) digits is 425250, while the sum is 46.

The square root of 655599007 is about 25604.6676799368. The cubic root of 655599007 is about 868.7192177075.

The spelling of 655599007 in words is "six hundred fifty-five million, five hundred ninety-nine thousand, seven".