68821371 has 24 divisors (see below), whose sum is σ = 102438336. Its totient is φ = 44498160.

The previous prime is 68821343. The next prime is 68821387. The reversal of 68821371 is 17312886.

It is not a de Polignac number, because 68821371 - 2⁵ = 68821339 is a prime.

It is a super-2 number, since 2×68821371² = 9472762212639282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68821391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62536 + ... + 63626.

It is an arithmetic number, because the mean of its divisors is an integer number (4268264).

Almost surely, 2^68821371 is an apocalyptic number.

68821371 is a deficient number, since it is larger than the sum of its proper divisors (33616965).

68821371 is a wasteful number, since it uses less digits than its factorization.

68821371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303 (or 1300 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 68821371 is about 8295.8646927249. The cubic root of 68821371 is about 409.8023457368.

The spelling of 68821371 in words is "sixty-eight million, eight hundred twenty-one thousand, three hundred seventy-one".