68888491 has 8 divisors (see below), whose sum is σ = 79084544. Its totient is φ = 58781160.

The previous prime is 68888489. The next prime is 68888497. The reversal of 68888491 is 19488886.

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 68888491 - 2¹ = 68888489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68888497) 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, 20505 + ... + 23626.

It is an arithmetic number, because the mean of its divisors is an integer number (9885568).

Almost surely, 2^68888491 is an apocalyptic number.

68888491 is a deficient number, since it is larger than the sum of its proper divisors (10196053).

68888491 is a wasteful number, since it uses less digits than its factorization.

68888491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44361.

The product of its digits is 884736, while the sum is 52.

The square root of 68888491 is about 8299.9090958877. The cubic root of 68888491 is about 409.9355262489.

The spelling of 68888491 in words is "sixty-eight million, eight hundred eighty-eight thousand, four hundred ninety-one".