655061615 has 16 divisors (see below), whose sum is σ = 860424096. Its totient is φ = 475804800.

The previous prime is 655061581. The next prime is 655061621. The reversal of 655061615 is 516160556.

It is not a de Polignac number, because 655061615 - 2⁸ = 655061359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 78641 + ... + 86570.

It is an arithmetic number, because the mean of its divisors is an integer number (53776506).

Almost surely, 2^655061615 is an apocalyptic number.

655061615 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

655061615 is a deficient number, since it is larger than the sum of its proper divisors (205362481).

655061615 is a wasteful number, since it uses less digits than its factorization.

655061615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165290.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 655061615 is about 25594.1715044656. The cubic root of 655061615 is about 868.4817908824.

The spelling of 655061615 in words is "six hundred fifty-five million, sixty-one thousand, six hundred fifteen".