65520678 has 8 divisors (see below), whose sum is σ = 131041368. Its totient is φ = 21840224.

The previous prime is 65520647. The next prime is 65520709. The reversal of 65520678 is 87602556.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65520647) and next prime (65520709).

It is a sphenic number, since it is the product of 3 distinct primes.

65520678 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5460051 + ... + 5460062.

It is an arithmetic number, because the mean of its divisors is an integer number (16380171).

Almost surely, 2^65520678 is an apocalyptic number.

65520678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

65520678 is a wasteful number, since it uses less digits than its factorization.

65520678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920118.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 65520678 is about 8094.4844184173. The cubic root of 65520678 is about 403.1433134160.

The spelling of 65520678 in words is "sixty-five million, five hundred twenty thousand, six hundred seventy-eight".