68501215 has 4 divisors (see below), whose sum is σ = 82201464. Its totient is φ = 54800968.

The previous prime is 68501207. The next prime is 68501221. The reversal of 68501215 is 51210586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68501215 - 2³ = 68501207 is a prime.

It is a Duffinian 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, 6850117 + ... + 6850126.

It is an arithmetic number, because the mean of its divisors is an integer number (20550366).

Almost surely, 2^68501215 is an apocalyptic number.

68501215 is a deficient number, since it is larger than the sum of its proper divisors (13700249).

68501215 is a wasteful number, since it uses less digits than its factorization.

68501215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13700248.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 68501215 is about 8276.5460791323. The cubic root of 68501215 is about 409.1658929741.

The spelling of 68501215 in words is "sixty-eight million, five hundred one thousand, two hundred fifteen".