68694989 has 8 divisors (see below), whose sum is σ = 75028032. Its totient is φ = 62376640.

The previous prime is 68694979. The next prime is 68695007. The reversal of 68694989 is 98949686.

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

It is a cyclic number.

It is not a de Polignac number, because 68694989 - 2¹² = 68690893 is a prime.

It is a super-3 number, since 3×68694989³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68694919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7637 + ... + 13989.

It is an arithmetic number, because the mean of its divisors is an integer number (9378504).

Almost surely, 2^68694989 is an apocalyptic number.

It is an amenable number.

68694989 is a deficient number, since it is larger than the sum of its proper divisors (6333043).

68694989 is a wasteful number, since it uses less digits than its factorization.

68694989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7347.

The product of its digits is 6718464, while the sum is 59.

The square root of 68694989 is about 8288.2440239172. The cubic root of 68694989 is about 409.5513414596.

The spelling of 68694989 in words is "sixty-eight million, six hundred ninety-four thousand, nine hundred eighty-nine".