655967515 has 16 divisors (see below), whose sum is σ = 902004480. Its totient is φ = 448610400.

The previous prime is 655967479. The next prime is 655967519. The reversal of 655967515 is 515769556.

It is not a de Polignac number, because 655967515 - 2⁹ = 655967003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655967519) 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, 11461 + ... + 37990.

It is an arithmetic number, because the mean of its divisors is an integer number (56375280).

Almost surely, 2^655967515 is an apocalyptic number.

655967515 is a deficient number, since it is larger than the sum of its proper divisors (246036965).

655967515 is a wasteful number, since it uses less digits than its factorization.

655967515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49842.

The product of its digits is 1417500, while the sum is 49.

The square root of 655967515 is about 25611.8627787984. The cubic root of 655967515 is about 868.8819543884.

The spelling of 655967515 in words is "six hundred fifty-five million, nine hundred sixty-seven thousand, five hundred fifteen".