68997851 has 8 divisors (see below), whose sum is σ = 74407200. Its totient is φ = 63603072.

The previous prime is 68997839. The next prime is 68997899. The reversal of 68997851 is 15879986.

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

It is not a de Polignac number, because 68997851 - 2¹⁰ = 68996827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68997793 and 68997802.

It is not an unprimeable number, because it can be changed into a prime (68997451) 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, 7475 + ... + 13923.

It is an arithmetic number, because the mean of its divisors is an integer number (9300900).

Almost surely, 2^68997851 is an apocalyptic number.

68997851 is a deficient number, since it is larger than the sum of its proper divisors (5409349).

68997851 is a wasteful number, since it uses less digits than its factorization.

68997851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285.

The product of its digits is 1088640, while the sum is 53.

The square root of 68997851 is about 8306.4945073117. The cubic root of 68997851 is about 410.1523348269.

The spelling of 68997851 in words is "sixty-eight million, nine hundred ninety-seven thousand, eight hundred fifty-one".