1068990615 has 240 divisors, whose sum is σ = 2502783360. Its totient is φ = 431464320.

The previous prime is 1068990599. The next prime is 1068990631. The reversal of 1068990615 is 5160998601.

It is an interprime number because it is at equal distance from previous prime (1068990599) and next prime (1068990631).

It is not a de Polignac number, because 1068990615 - 2⁴ = 1068990599 is a prime.

It is a super-2 number, since 2×1068990615² = 2285481869916156450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 12879364 + ... + 12879446.

It is an arithmetic number, because the mean of its divisors is an integer number (10428264).

Almost surely, 2^1068990615 is an apocalyptic number.

1068990615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1068990615 is an abundant number, since it is smaller than the sum of its proper divisors (1433792745).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1068990615 is a wasteful number, since it uses less digits than its factorization.

1068990615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 1068990615 is about 32695.4219272362. The cubic root of 1068990615 is about 1022.4873980947.

The spelling of 1068990615 in words is "one billion, sixty-eight million, nine hundred ninety thousand, six hundred fifteen".