68969015 has 4 divisors (see below), whose sum is σ = 82762824. Its totient is φ = 55175208.

The previous prime is 68969009. The next prime is 68969029. The reversal of 68969015 is 51096986.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68969015 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, 6896897 + ... + 6896906.

It is an arithmetic number, because the mean of its divisors is an integer number (20690706).

Almost surely, 2^68969015 is an apocalyptic number.

68969015 is a deficient number, since it is larger than the sum of its proper divisors (13793809).

68969015 is a wasteful number, since it uses less digits than its factorization.

68969015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13793808.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 68969015 is about 8304.7585756601. The cubic root of 68969015 is about 410.0951890822.

The spelling of 68969015 in words is "sixty-eight million, nine hundred sixty-nine thousand, fifteen".