67680515 has 12 divisors (see below), whose sum is σ = 94476816. Its totient is φ = 46409328.

The previous prime is 67680499. The next prime is 67680551. The reversal of 67680515 is 51508676.

It is a happy number.

It is not a de Polignac number, because 67680515 - 2⁴ = 67680499 is a prime.

It is a super-2 number, since 2×67680515² = 9161304221330450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137879 + ... + 138368.

It is an arithmetic number, because the mean of its divisors is an integer number (7873068).

Almost surely, 2^67680515 is an apocalyptic number.

67680515 is a deficient number, since it is larger than the sum of its proper divisors (26796301).

67680515 is a wasteful number, since it uses less digits than its factorization.

67680515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276266 (or 276259 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 67680515 is about 8226.8168206178. The cubic root of 67680515 is about 407.5252772657.

The spelling of 67680515 in words is "sixty-seven million, six hundred eighty thousand, five hundred fifteen".