6615231268 has 6 divisors (see below), whose sum is σ = 11576654726. Its totient is φ = 3307615632.

The previous prime is 6615231257. The next prime is 6615231269. The reversal of 6615231268 is 8621325166.

It can be written as a sum of positive squares in only one way, i.e., 4038856704 + 2576374564 = 63552^2 + 50758^2 .

It is a super-2 number, since 2×6615231268² = 87522569458249775648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6615231268.

It is not an unprimeable number, because it can be changed into a prime (6615231269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826903905 + ... + 826903912.

Almost surely, 2^6615231268 is an apocalyptic number.

It is an amenable number.

6615231268 is a deficient number, since it is larger than the sum of its proper divisors (4961423458).

6615231268 is a wasteful number, since it uses less digits than its factorization.

6615231268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653807821 (or 1653807819 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 6615231268 is about 81334.0719993780. The cubic root of 6615231268 is about 1877.2192997741.

The spelling of 6615231268 in words is "six billion, six hundred fifteen million, two hundred thirty-one thousand, two hundred sixty-eight".