68971810 has 32 divisors (see below), whose sum is σ = 127256832. Its totient is φ = 26906880.

The previous prime is 68971781. The next prime is 68971841. The reversal of 68971810 is 1817986.

It is a super-2 number, since 2×68971810² = 9514221149352200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75255 + ... + 76165.

It is an arithmetic number, because the mean of its divisors is an integer number (3976776).

Almost surely, 2^68971810 is an apocalyptic number.

68971810 is a deficient number, since it is larger than the sum of its proper divisors (58285022).

68971810 is a wasteful number, since it uses less digits than its factorization.

68971810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 68971810 is about 8304.9268509723. The cubic root of 68971810 is about 410.1007287707.

The spelling of 68971810 in words is "sixty-eight million, nine hundred seventy-one thousand, eight hundred ten".