68516497 has 8 divisors (see below), whose sum is σ = 78604416. Its totient is φ = 58503552.

The previous prime is 68516467. The next prime is 68516507. The reversal of 68516497 is 79461586.

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 68516497 - 2⁷ = 68516369 is a prime.

It is a super-2 number, since 2×68516497² = 9389020722302018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68516407) 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, 16768 + ... + 20449.

It is an arithmetic number, because the mean of its divisors is an integer number (9825552).

Almost surely, 2^68516497 is an apocalyptic number.

It is an amenable number.

68516497 is a deficient number, since it is larger than the sum of its proper divisors (10087919).

68516497 is a wasteful number, since it uses less digits than its factorization.

68516497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37487.

The product of its digits is 362880, while the sum is 46.

The square root of 68516497 is about 8277.4692388435. The cubic root of 68516497 is about 409.1963177787.

The spelling of 68516497 in words is "sixty-eight million, five hundred sixteen thousand, four hundred ninety-seven".